diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 5c3e2e3d27ac..f06b5c249ecb 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1065,15 +1065,10 @@ struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root,
 		 * is provided by the caller, so we know it's alive
 		 * and kicking, and don't take an extra reference.
 		 */
-		memcg = mem_cgroup_from_css(css);
-
-		if (css == &root->css)
+		if (css == &root->css || css_tryget(css)) {
+			memcg = mem_cgroup_from_css(css);
 			break;
-
-		if (css_tryget(css))
-			break;
-
-		memcg = NULL;
+		}
 	}
 
 	if (reclaim) {