diff --git a/mm/mlock.c b/mm/mlock.c
index a6da2aee940af0873f46bd1b88b24a36242979b3..1ada366570cb535e4a281f7d526829c708f320f3 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -162,7 +162,7 @@ static long __mlock_vma_pages_range(struct vm_area_struct *vma,
 	unsigned long addr = start;
 	struct page *pages[16]; /* 16 gives a reasonable batch */
 	int nr_pages = (end - start) / PAGE_SIZE;
-	int ret;
+	int ret = 0;
 	int gup_flags = 0;
 
 	VM_BUG_ON(start & ~PAGE_MASK);