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hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/iommu/mtk_iommu_v1.c
..
..
@@ -618,18 +618,34 @@
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 	ret = iommu_device_sysfs_add(&data->iommu, &pdev->dev, NULL,
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 				     dev_name(&pdev->dev));
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 	if (ret)
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-		return ret;
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+		goto out_clk_unprepare;
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 	iommu_device_set_ops(&data->iommu, &mtk_iommu_ops);
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 	ret = iommu_device_register(&data->iommu);
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 	if (ret)
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-		return ret;
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+		goto out_sysfs_remove;
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-	if (!iommu_present(&platform_bus_type))
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-		bus_set_iommu(&platform_bus_type,  &mtk_iommu_ops);
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+	if (!iommu_present(&platform_bus_type)) {
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+		ret = bus_set_iommu(&platform_bus_type,  &mtk_iommu_ops);
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+		if (ret)
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+			goto out_dev_unreg;
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+	}
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-	return component_master_add_with_match(dev, &mtk_iommu_com_ops, match);
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+	ret = component_master_add_with_match(dev, &mtk_iommu_com_ops, match);
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+	if (ret)
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+		goto out_bus_set_null;
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+	return ret;
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+
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+out_bus_set_null:
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+	bus_set_iommu(&platform_bus_type, NULL);
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+out_dev_unreg:
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+	iommu_device_unregister(&data->iommu);
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+out_sysfs_remove:
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+	iommu_device_sysfs_remove(&data->iommu);
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+out_clk_unprepare:
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+	clk_disable_unprepare(data->bclk);
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+	return ret;
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 }
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 static int mtk_iommu_remove(struct platform_device *pdev)