ksmbd: don't send oplock break if rename fails

[ Upstream commit c1832f67 ]

Don't send oplock break if rename fails. This patch fix
smb2.oplock.batch20 test.

Cc: stable@vger.kernel.org
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>