diff --git a/src/backend/distributed/metadata/metadata_sync.c b/src/backend/distributed/metadata/metadata_sync.c
index 6050076a7..4b3458a59 100644
--- a/src/backend/distributed/metadata/metadata_sync.c
+++ b/src/backend/distributed/metadata/metadata_sync.c
@@ -578,12 +578,12 @@ FetchRelationIdFromPgPartitionHeapTuple(HeapTuple heapTuple, TupleDesc tupleDesc
 
 	heap_deform_tuple(heapTuple, tupleDesc, datumArray, isNullArray);
 
-	pfree(datumArray);
-	pfree(isNullArray);
-
 	Datum relationIdDatum = datumArray[Anum_pg_dist_partition_logicalrelid - 1];
 	Oid relationId = DatumGetObjectId(relationIdDatum);
 
+	pfree(datumArray);
+	pfree(isNullArray);
+
 	return relationId;
 }