nvme-loop: clear NVME_LOOP_Q_LIVE when nvme_loop_configure_admin_queue() fails

stable inclusion
from linux-4.19.196
commit ef244ccfd1c213fa8c05b58b6760640718e9b636

--------------------------------

[ Upstream commit 1c5f8e88 ]

When the call to nvme_enable_ctrl() in nvme_loop_configure_admin_queue()
fails the NVME_LOOP_Q_LIVE flag is not cleared.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>