drm/tegra: vic: Fix DMA API misuse

Upon failure, dma_alloc_coherent() returns NULL. If that does happen,
passing some uninitialised stack contents to dma_mapping_error() - which
belongs to a different API in the first place - has precious little
chance of detecting it.

Also include the correct header, because the fragile transitive
inclusion currently providing it is going to break soon.

Fixes: 20e7dce255e9 ("drm/tegra: Remove memory allocation from Falcon library")
CC: Thierry Reding <[email protected]>
CC: Mikko Perttunen <[email protected]>
CC: [email protected]
Signed-off-by: Robin Murphy <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

0 files changed, 0 insertions, 0 deletions