drm/tegra: Check for NULL pointer instead of IS_ERR()
authorDan Carpenter <dan.carpenter@oracle.com>
Thu, 4 Dec 2014 11:00:35 +0000 (14:00 +0300)
committerThierry Reding <treding@nvidia.com>
Tue, 27 Jan 2015 09:14:36 +0000 (10:14 +0100)
iommu_domain_alloc() returns NULL on error, it never returns error
pointers.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

No differences found
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