When there is no enough segments for a packet in in-order
mergeable Rx path, we should free the whole mbuf chain instead
of just recycling the last segment.
Fixes: e5f456a98d ("net/virtio: support in-order Rx and Tx")
Cc: stable@dpdk.org
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>