The private virtio_user_dev structure embeds a virtio_hw which itself
contains the ethdev port_id.
Make use of it and remove the duplicate port_id field.

Signed-off-by: David Marchand <redacted>
---
Posting this cleanup that I caught when reviewing/discussing the port_id
fix from Maxime.
It can wait 21.05.

---
 drivers/net/virtio/virtio_user/vhost_user.c      | 3 ++-
 drivers/net/virtio/virtio_user/virtio_user_dev.c | 6 +++---
 drivers/net/virtio/virtio_user/virtio_user_dev.h | 1 -
 drivers/net/virtio/virtio_user_ethdev.c          | 1 -
 4 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/virtio/virtio_user/vhost_user.c b/drivers/net/virtio/virtio_user/vhost_user.c
index ec2c53c8fb..18ae29eed2 100644
--- a/drivers/net/virtio/virtio_user/vhost_user.c
+++ b/drivers/net/virtio/virtio_user/vhost_user.c

@@ -950,7 +950,8 @@ vhost_user_update_link_state(struct virtio_user_dev *dev)
 		r = recv(data->vhostfd, buf, 128, MSG_PEEK);
 		if (r == 0 || (r < 0 && errno != EAGAIN)) {
 			dev->net_status &= (~VIRTIO_NET_S_LINK_UP);
-			PMD_DRV_LOG(ERR, "virtio-user port %u is down", dev->port_id);
+			PMD_DRV_LOG(ERR, "virtio-user port %u is down",
+				dev->hw.port_id);