virtio: Fix returning -ENODEV

This has a special meaning in driver model. There is clearly a device, so
it does not make sense to return this error code. Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/virtio/virtio-uclass.c b/drivers/virtio/virtio-uclass.c
index 6d9b029..a6bff63 100644
--- a/drivers/virtio/virtio-uclass.c
+++ b/drivers/virtio/virtio-uclass.c
@@ -163,7 +163,7 @@
 		return ret;
 	if (!(status & VIRTIO_CONFIG_S_FEATURES_OK)) {
 		debug("(%s): device refuses features %x\n", vdev->name, status);
-		return -ENODEV;
+		return -EINVAL;
 	}
 
 	return 0;