Revert "vdpa/mlx5: Fix wrong mac address deletion"

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2169174

Upstream Status: RHEL only

SVQ can not work with vlan filtering and support VLAN in SVQ is not a
high priority now, so need to revert these commit in rhel9.2

This reverts commit 30d5fd2.

Signed-off-by: Cindy Lu <lulu@redhat.com>

Author: lulu-github-name

drivers/vdpa/mlx5/net/mlx5_vnet.c

@@ -1684,7 +1684,7 @@ static virtio_net_ctrl_ack handle_ctrl_mac(struct mlx5_vdpa_dev *mvdev, u8 cmd)
 
 		/* Need recreate the flow table entry, so that the packet could forward back
 		 */
-		mac_vlan_del(ndev, mac_back, 0, false);
+		mac_vlan_del(ndev, ndev->config.mac, 0, false);
 
 		if (mac_vlan_add(ndev, ndev->config.mac, 0, false)) {
 			mlx5_vdpa_warn(mvdev, "failed to insert forward rules, try to restore\n");