vhost-user: keep vhost_net after a disconnection
Many code paths assume get_vhost_net() returns non-null. Keep VhostUserState.vhost_net after a successful vhost_net_init(), instead of freeing it in vhost_net_cleanup(). VhostUserState.vhost_net is thus freed before after being recreated or on final vhost_user_cleanup() and there is no need to save the acked features. Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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