iommu/tegra-smmu: Fix return value check in tegra_smmu_group_get()
authorWei Yongjun <weiyongjun1@huawei.com>
Wed, 20 Dec 2017 03:06:09 +0000 (03:06 +0000)
committerThierry Reding <treding@nvidia.com>
Wed, 20 Dec 2017 17:32:08 +0000 (18:32 +0100)
commit83476bfaf6ac1cebf0cc5a3bdcf5031ef875cf42
treec88d555e200ff98ead65e814d201c4acf6d2213b
parent7f4c9176f760f4006af9f0863403f977a0bb3c52
iommu/tegra-smmu: Fix return value check in tegra_smmu_group_get()

In case of error, the function iommu_group_alloc() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().

Fixes: 7f4c9176f760 ("iommu/tegra: Allow devices to be grouped")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
drivers/iommu/tegra-smmu.c