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Define a new helper function, virtblk_fail_to_queue(), to
clean up the error handling code in virtio_queue_rq().
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Message-Id: <20221016034127.330942-2-dmitry.fomichev@wdc.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>