This pulls the request completion for error cases from the caller to
scsi_disk_emulate_command. This should not change semantics, but allows to
reuse scsi_handle_write_error() for flushes in the next patch.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>