drm/udl: Remove error check from fbdev setup

Remove the error check from the fbdev setup function. The driver's
probe function should not depend on a DRM client's state.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200408082641.590-9-tzimmermann@suse.de

drivers/gpu/drm/udl/udl_drv.c

@@ -97,14 +97,10 @@ static int udl_usb_probe(struct usb_interface *interface,
 
 	DRM_INFO("Initialized udl on minor %d\n", udl->drm.primary->index);
 
-	r = drm_fbdev_generic_setup(&udl->drm, 0);
-	if (r)
-		goto err_drm_dev_unregister;
+	drm_fbdev_generic_setup(&udl->drm, 0);
 
 	return 0;
 
-err_drm_dev_unregister:
-	drm_dev_unregister(&udl->drm);
 err_free:
 	drm_dev_put(&udl->drm);
 	return r;