diff --git a/nova/api/openstack/compute/admin_actions.py b/nova/api/openstack/compute/admin_actions.py
index 94d7973687a2..de85642dba55 100644
--- a/nova/api/openstack/compute/admin_actions.py
+++ b/nova/api/openstack/compute/admin_actions.py
@@ -44,8 +44,8 @@ class AdminActionsController(wsgi.Controller):
         """Permit admins to reset networking on a server."""
         context = req.environ['nova.context']
         context.can(aa_policies.POLICY_ROOT % 'reset_network')
+        instance = common.get_instance(self.compute_api, context, id)
         try:
-            instance = common.get_instance(self.compute_api, context, id)
             self.compute_api.reset_network(context, instance)
         except exception.InstanceUnknownCell as e:
             raise exc.HTTPNotFound(explanation=e.format_message())
@@ -59,8 +59,8 @@ class AdminActionsController(wsgi.Controller):
         """Permit admins to inject network info into a server."""
         context = req.environ['nova.context']
         context.can(aa_policies.POLICY_ROOT % 'inject_network_info')
+        instance = common.get_instance(self.compute_api, context, id)
         try:
-            instance = common.get_instance(self.compute_api, context, id)
             self.compute_api.inject_network_info(context, instance)
         except exception.InstanceUnknownCell as e:
             raise exc.HTTPNotFound(explanation=e.format_message())
diff --git a/nova/api/openstack/compute/migrate_server.py b/nova/api/openstack/compute/migrate_server.py
index 89983f0b8514..4b5b81d5d837 100644
--- a/nova/api/openstack/compute/migrate_server.py
+++ b/nova/api/openstack/compute/migrate_server.py
@@ -94,8 +94,8 @@ class MigrateServerController(wsgi.Controller):
             disk_over_commit = strutils.bool_from_string(disk_over_commit,
                                                          strict=True)
 
+        instance = common.get_instance(self.compute_api, context, id)
         try:
-            instance = common.get_instance(self.compute_api, context, id)
             self.compute_api.live_migrate(context, instance, block_migration,
                                           disk_over_commit, host, force, async)
         except exception.InstanceUnknownCell as e:
diff --git a/nova/api/openstack/compute/remote_consoles.py b/nova/api/openstack/compute/remote_consoles.py
index da30c88df04b..ff4a71775fa9 100644
--- a/nova/api/openstack/compute/remote_consoles.py
+++ b/nova/api/openstack/compute/remote_consoles.py
@@ -49,8 +49,8 @@ class RemoteConsolesController(wsgi.Controller):
         # If type is not supplied or unknown, get_vnc_console below will cope
         console_type = body['os-getVNCConsole'].get('type')
 
+        instance = common.get_instance(self.compute_api, context, id)
         try:
-            instance = common.get_instance(self.compute_api, context, id)
             output = self.compute_api.get_vnc_console(context,
                                                       instance,
                                                       console_type)
@@ -78,8 +78,8 @@ class RemoteConsolesController(wsgi.Controller):
         # If type is not supplied or unknown, get_spice_console below will cope
         console_type = body['os-getSPICEConsole'].get('type')
 
+        instance = common.get_instance(self.compute_api, context, id)
         try:
-            instance = common.get_instance(self.compute_api, context, id)
             output = self.compute_api.get_spice_console(context,
                                                         instance,
                                                         console_type)
@@ -137,8 +137,8 @@ class RemoteConsolesController(wsgi.Controller):
 
         # If type is not supplied or unknown get_serial_console below will cope
         console_type = body['os-getSerialConsole'].get('type')
+        instance = common.get_instance(self.compute_api, context, id)
         try:
-            instance = common.get_instance(self.compute_api, context, id)
             output = self.compute_api.get_serial_console(context,
                                                          instance,
                                                          console_type)
diff --git a/nova/api/openstack/compute/security_groups.py b/nova/api/openstack/compute/security_groups.py
index 9907a50d34dd..e6fc6abd8430 100644
--- a/nova/api/openstack/compute/security_groups.py
+++ b/nova/api/openstack/compute/security_groups.py
@@ -343,9 +343,8 @@ class ServerSecurityGroupController(SecurityGroupControllerBase):
 
         self.security_group_api.ensure_default(context)
 
+        instance = common.get_instance(self.compute_api, context, server_id)
         try:
-            instance = common.get_instance(self.compute_api, context,
-                                           server_id)
             groups = self.security_group_api.get_instance_security_groups(
                 context, instance, True)
         except (exception.SecurityGroupNotFound,
diff --git a/nova/api/openstack/compute/server_metadata.py b/nova/api/openstack/compute/server_metadata.py
index cfe6bf546861..711135ef0300 100644
--- a/nova/api/openstack/compute/server_metadata.py
+++ b/nova/api/openstack/compute/server_metadata.py
@@ -105,8 +105,8 @@ class ServerMetadataController(wsgi.Controller):
 
     def _update_instance_metadata(self, context, server_id, metadata,
                                   delete=False):
+        server = common.get_instance(self.compute_api, context, server_id)
         try:
-            server = common.get_instance(self.compute_api, context, server_id)
             return self.compute_api.update_instance_metadata(context,
                                                              server,
                                                              metadata,
diff --git a/nova/api/openstack/compute/suspend_server.py b/nova/api/openstack/compute/suspend_server.py
index fa55b2551efe..ec3546b34619 100644
--- a/nova/api/openstack/compute/suspend_server.py
+++ b/nova/api/openstack/compute/suspend_server.py
@@ -35,8 +35,8 @@ class SuspendServerController(wsgi.Controller):
     def _suspend(self, req, id, body):
         """Permit admins to suspend the server."""
         context = req.environ['nova.context']
+        server = common.get_instance(self.compute_api, context, id)
         try:
-            server = common.get_instance(self.compute_api, context, id)
             context.can(ss_policies.POLICY_ROOT % 'suspend',
                         target={'user_id': server.user_id,
                                 'project_id': server.project_id})
@@ -56,8 +56,8 @@ class SuspendServerController(wsgi.Controller):
         """Permit admins to resume the server from suspend."""
         context = req.environ['nova.context']
         context.can(ss_policies.POLICY_ROOT % 'resume')
+        server = common.get_instance(self.compute_api, context, id)
         try:
-            server = common.get_instance(self.compute_api, context, id)
             self.compute_api.resume(context, server)
         except exception.InstanceUnknownCell as e:
             raise exc.HTTPNotFound(explanation=e.format_message())