drm/hibmc: Call drm_irq_uninstall() unconditionally

Remove the check around drm_irq_uninstall(). The same test is
done by the function internally. The tested state in irq_enabled
is considered obsolete and should not be used by KMS drivers.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Tian Tao <tiantao6@hisilicon.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210625082222.3845-3-tzimmermann@suse.de

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c

@@ -253,8 +253,7 @@ static int hibmc_unload(struct drm_device *dev)
 {
 	drm_atomic_helper_shutdown(dev);
 
-	if (dev->irq_enabled)
-		drm_irq_uninstall(dev);
+	drm_irq_uninstall(dev);
 
 	pci_disable_msi(to_pci_dev(dev->dev));