cifs: unlock on error in smb3_reconfigure()

[ Upstream commit cda88d2 ]

Unlock before returning if smb3_sync_session_ctx_passwords() fails.

Fixes: 7e654ab ("cifs: during remount, make sure passwords are in sync")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Bharath SM <[email protected]>
Signed-off-by: Steve French <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: Dan Carpenter

fs/smb/client/fs_context.c

@@ -978,8 +978,10 @@ static int smb3_reconfigure(struct fs_context *fc)
 	 * later stage
 	 */
 	rc = smb3_sync_session_ctx_passwords(cifs_sb, ses);
-	if (rc)
+	if (rc) {
+		mutex_unlock(&ses->session_mutex);
 		return rc;
+	}
 
 	/*
 	 * now that allocations for passwords are done, commit them