net/virtio-user: fix device starting failure handling

[ upstream commit c1a6f787b04e470ebe9b5a3891022195eb2bc555 ]

If the device fails to start, read the status from the
device and return early.

Fixes: 5791282 ("net/virtio-user: support vhost status setting")

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>

drivers/net/virtio/virtio_user_ethdev.c

@@ -317,10 +317,15 @@ virtio_user_set_status(struct virtio_hw *hw, uint8_t status)
 	if (status & VIRTIO_CONFIG_STATUS_FEATURES_OK &&
 			~old_status & VIRTIO_CONFIG_STATUS_FEATURES_OK)
 		virtio_user_dev_set_features(dev);
-	if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
-		virtio_user_start_device(dev);
-	else if (status == VIRTIO_CONFIG_STATUS_RESET)
+
+	if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK) {
+		if (virtio_user_start_device(dev)) {
+			virtio_user_dev_update_status(dev);
+			return;
+		}
+	} else if (status == VIRTIO_CONFIG_STATUS_RESET) {
 		virtio_user_reset(hw);
+	}
 
 	virtio_user_dev_set_status(dev, status);
 }