drm/amdkfd: check for null dev to avoid a null pointer dereference
The call to kfd_device_by_id can potentially return null, so check that dev is null and return with -EINVAL to avoid a null pointer dereference. Detected by CoverityScan CID#1454629 ("Dereference null return value") Fixes: 5d71dbc3 ("drm/amdkfd: Implement image tiling mode support v2") Signed-off-by:Colin Ian King <colin.king@canonical.com> Signed-off-by:
Oded Gabbay <oded.gabbay@gmail.com>
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