block/backup: drop dead code from backup_job_create

After commit 00e30f05de1d195, there is no more "goto error" points
after job creation, so after "error:" @job is always NULL and we don't
need roll-back job creation.

Reported-by: Coverity (CID 1406402)
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
1 file changed