cifs: fix filp leak in cifs_atomic_open()

If an error occurs after having called finish_open() then fput() needs to
be called on the already opened file.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Steve French <sfrench@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index d3e2eaa..5384c2a 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -500,6 +500,7 @@
 		if (server->ops->close)
 			server->ops->close(xid, tcon, &fid);
 		cifs_del_pending_open(&open);
+		fput(file);
 		rc = -ENOMEM;
 	}