diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index b5b4e310fe70..ae9044bc9f80 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -418,8 +418,10 @@ int memcg_expand_shrinker_maps(int new_id)
 		if (mem_cgroup_is_root(memcg))
 			continue;
 		ret = memcg_expand_one_shrinker_map(memcg, size, old_size);
-		if (ret)
+		if (ret) {
+			mem_cgroup_iter_break(NULL, memcg);
 			goto unlock;
+		}
 	}
 unlock:
 	if (!ret)