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iommu: arm-smmu: Handle return of iommu_device_register. 

iommu_device_register returns an error code and, although it currently
never fails, we should check its return value anyway.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
[will: adjusted to follow arm-smmu.c]
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Arvind Yadav 2017-06-22 12:57:42 +05:30 committed by Will Deacon
parent ebdd13c93f
commit 5c2d021829
1 changed files with 4 additions and 0 deletions
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4
drivers/iommu/arm-smmu-v3.c
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@ -2744,6 +2744,10 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
iommu_device_set_fwnode(&smmu->iommu, dev->fwnode);
ret = iommu_device_register(&smmu->iommu);
if (ret) {
dev_err(dev, "Failed to register iommu\n");
return ret;
}
#ifdef CONFIG_PCI
if (pci_bus_type.iommu_ops != &arm_smmu_ops) {