vdpa: reuse virtio_vdev_has_feature()

We can use virtio_vdev_has_feature() instead of manually
accessing the features.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <ff838d30206209fd865511b16ffb34cc0d5e8d8f.1685704856.git.yin31149@gmail.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Tested-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

net/vhost-vdpa.c

@@ -629,8 +629,7 @@ static ssize_t vhost_vdpa_net_load_cmd(VhostVDPAState *s, uint8_t class,
 
 static int vhost_vdpa_net_load_mac(VhostVDPAState *s, const VirtIONet *n)
 {
-    uint64_t features = n->parent_obj.guest_features;
-    if (features & BIT_ULL(VIRTIO_NET_F_CTRL_MAC_ADDR)) {
+    if (virtio_vdev_has_feature(&n->parent_obj, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
         ssize_t dev_written = vhost_vdpa_net_load_cmd(s, VIRTIO_NET_CTRL_MAC,
                                                   VIRTIO_NET_CTRL_MAC_ADDR_SET,
                                                   n->mac, sizeof(n->mac));
@@ -648,10 +647,9 @@ static int vhost_vdpa_net_load_mq(VhostVDPAState *s,
                                   const VirtIONet *n)
 {
     struct virtio_net_ctrl_mq mq;
-    uint64_t features = n->parent_obj.guest_features;
     ssize_t dev_written;
 
-    if (!(features & BIT_ULL(VIRTIO_NET_F_MQ))) {
+    if (!virtio_vdev_has_feature(&n->parent_obj, VIRTIO_NET_F_MQ)) {
         return 0;
     }