drm/mgag200: Set up fbdev after registering device; remove error checks

Generic fbdev support is a DRM client. Set it up after registering
the new DRM device. Remove the error checks as 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/20200408082641.590-7-tzimmermann@suse.de

drivers/gpu/drm/mgag200/mgag200_drv.c

@@ -77,6 +77,8 @@ static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto err_mgag200_driver_unload;
 
+	drm_fbdev_generic_setup(dev, 0);
+
 	return 0;
 
 err_mgag200_driver_unload:

drivers/gpu/drm/mgag200/mgag200_main.c

@@ -181,10 +181,6 @@ int mgag200_driver_load(struct drm_device *dev, unsigned long flags)
 		dev_warn(&dev->pdev->dev,
 			"Could not initialize cursors. Not doing hardware cursors.\n");
 
-	r = drm_fbdev_generic_setup(mdev->dev, 0);
-	if (r)
-		goto err_modeset;
-
 	return 0;
 
 err_modeset: