[PULL 08/16] virtio-blk: Fix rollback path in virtio_blk_data_plane_start()

From: Greg Kurz When dataplane multiqueue support was added in QEMU 2.7, the path that would rollback guest notifiers assignment in case of error simply got dropped. Later on, when Error was added to blk_set_aio_context() in QEMU 4.1, another error path was introduced, but it ommits to rollback

[PULL 08/16] virtio-blk: Fix rollback path in virtio_blk_data_plane_start()

From: Greg Kurz When dataplane multiqueue support was added in QEMU 2.7, the path that would rollback guest notifiers assignment in case of error simply got dropped. Later on, when Error was added to blk_set_aio_context() in QEMU 4.1, another error path was introduced, but it ommits to rollback