mm is assigned first, so it does not need to initialize the assignment.

Signed-off-by: Li kunyu <kunyu@nfschina.com>
---
 fs/exec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/exec.c b/fs/exec.c
index 10309a93d9c52..64046203bd5ea 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -369,7 +369,7 @@ static bool valid_arg_len(struct linux_binprm *bprm, long len)
 static int bprm_mm_init(struct linux_binprm *bprm)
 {
 	int err;
-	struct mm_struct *mm = NULL;
+	struct mm_struct *mm;
 
 	bprm->mm = mm = mm_alloc();
 	err = -ENOMEM;
-- 
2.18.2