diff --git a/nova/conf/placement.py b/nova/conf/placement.py
index 74cefbc11253..e5f627cbdb18 100644
--- a/nova/conf/placement.py
+++ b/nova/conf/placement.py
@@ -50,9 +50,10 @@ Possible values:
 Endpoint interface for this node. This is used when picking the URL in the
 service catalog.
 """),
-    cfg.BoolOpt('randomize_allocation_candidates',
-                default=False,
-                help="""
+    cfg.BoolOpt(
+        'randomize_allocation_candidates',
+        default=False,
+        help="""
 If True, when limiting allocation candidate results, the results will be
 a random sampling of the full result set. If False, allocation candidates
 are returned in a deterministic but undefined order. That is, all things
diff --git a/nova/objects/resource_provider.py b/nova/objects/resource_provider.py
index b57d0ed7803b..7209ddad5560 100644
--- a/nova/objects/resource_provider.py
+++ b/nova/objects/resource_provider.py
@@ -3567,24 +3567,22 @@ class AllocationCandidates(base.NovaObject):
         # needing to mess with the complex sql above or add additional
         # columns to the DB.
 
-        # Track the resource provider uuids that we have chosen so that
-        # we can pull out their summaries below.
-        alloc_req_rp_uuids = set()
         if limit and limit <= len(alloc_request_objs):
             if CONF.placement.randomize_allocation_candidates:
                 alloc_request_objs = random.sample(alloc_request_objs, limit)
             else:
                 alloc_request_objs = alloc_request_objs[:limit]
-            # Extract resource provider uuids from the resource requests.
-            for aro in alloc_request_objs:
-                for arr in aro.resource_requests:
-                    alloc_req_rp_uuids.add(arr.resource_provider.uuid)
         elif CONF.placement.randomize_allocation_candidates:
             random.shuffle(alloc_request_objs)
 
         # Limit summaries to only those mentioned in the allocation requests.
         if limit and limit <= len(alloc_request_objs):
             kept_summary_objs = []
+            alloc_req_rp_uuids = set()
+            # Extract resource provider uuids from the resource requests.
+            for aro in alloc_request_objs:
+                for arr in aro.resource_requests:
+                    alloc_req_rp_uuids.add(arr.resource_provider.uuid)
             for summary in summary_objs:
                 rp_uuid = summary.resource_provider.uuid
                 # Skip a summary if we are limiting and haven't selected an