[PATCH -next] lockdown: Add break in lockdown_write

[Cai Xinchen]

After the label is matched successful, any other levels judgements
are meaningless. Therefore, add break to return early

Signed-off-by: Cai Xinchen <caixinchen1 at huawei.com>
---
 security/lockdown/lockdown.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c
index 8d46886d2cca..263dcc80d839 100644
--- a/security/lockdown/lockdown.c
+++ b/security/lockdown/lockdown.c
@@ -139,8 +139,10 @@ static ssize_t lockdown_write(struct file *file, const char __user *buf,
 		enum lockdown_reason level = lockdown_levels[i];
 		const char *label = lockdown_reasons[level];
 
-		if (label && !strcmp(state, label))
+		if (label && !strcmp(state, label)) {
 			err = lock_kernel_down("securityfs", level);
+			break;
+		}
 	}
 
 	kfree(state);
-- 
2.34.1