virtio: correctly initialize vm_running Current vm_running was not explicitly initialized and its value was changed by vm state notifier, this may confuse the virtio device being hotplugged such as virtio-net with vhost backend as it may think the vm was not running. Solve this by initialize this value explicitly in virtio_common_init(). Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>