cifs: clean up an inconsistent indenting

Eliminate the follow smatch warning:
fs/cifs/sess.c:1581 sess_auth_rawntlmssp_authenticate() warn:
inconsistent indenting
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/cifs/sess.c

@@ -1577,7 +1577,7 @@ sess_auth_rawntlmssp_authenticate(struct sess_data *sess_data)
 out:
 	sess_free_buffer(sess_data);
 
-	 if (!rc)
+	if (!rc)
 		rc = sess_establish_session(sess_data);
 
 	/* Cleanup */