ksmbd: fix bug on trap from locks_release_private

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

Author: namjaejeon

smb2pdu.c

@@ -8069,7 +8069,7 @@ int smb2_lock(struct ksmbd_work *work)
 retry:
 		rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
 skip:
-		if (flags & SMB2_LOCKFLAG_UNLOCK) {
+		if (smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) {
 			if (!rc) {
 				ksmbd_debug(SMB, "File unlocked\n");
 			} else if (rc == -ENOENT) {