drm/hisilicon/hibmc: fix the hibmc loaded failed bug

When hibmc loaded failed, the driver use hibmc_unload to free the
resource, but the mutexes in mode.config are not init, which will
access an NULL pointer. Just change goto statement to return, because
hibnc_hw_init() doesn't need to free anything.

Fixes: b3df5e6 ("drm/hibmc: Drop drm_vblank_cleanup")
Signed-off-by: Baihan Li <[email protected]>
Signed-off-by: Yongbang Shi <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Baryshkov <[email protected]>

Author: mark1188-ui

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

@@ -319,13 +319,13 @@ static int hibmc_load(struct drm_device *dev)
 
 	ret = hibmc_hw_init(priv);
 	if (ret)
-		goto err;
+		return ret;
 
 	ret = drmm_vram_helper_init(dev, pci_resource_start(pdev, 0),
 				    pci_resource_len(pdev, 0));
 	if (ret) {
 		drm_err(dev, "Error initializing VRAM MM; %d\n", ret);
-		goto err;
+		return ret;
 	}
 
 	ret = hibmc_kms_init(priv);