iommu/rockchip: Fix error handling in probe

Add missing iommu_device_sysfs_remove in error path.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/rockchip-iommu.c

@@ -1193,6 +1193,8 @@ static int rk_iommu_probe(struct platform_device *pdev)
 
 	iommu_device_set_ops(&iommu->iommu, &rk_iommu_ops);
 	err = iommu_device_register(&iommu->iommu);
+	if (err)
+		iommu_device_sysfs_remove(&iommu->iommu);
 
 	return err;
 }