diff --git a/mm/migrate.c b/mm/migrate.c
index 1a4bf4813780eb700ee026030bca18fedc2fbae6..7dbcb22316d2b2e482de278a8023c6429fe7bfaf 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -602,7 +602,7 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private,
 	struct page *newpage = get_new_page(page, private, &result);
 	int rcu_locked = 0;
 	int charge = 0;
-	struct mem_cgroup *mem;
+	struct mem_cgroup *mem = NULL;
 
 	if (!newpage)
 		return -ENOMEM;