drm/amdgpu/acpi: NULL check before some freeing functions is not needed

kfree(NULL) is safe, so removes NULL check before freeing the mem.
This patch also fix the ifnullfree.cocci warnings.

Reviewed-by: Lyude Paul <[email protected]>
Signed-off-by: Wen Yang <[email protected]>
CC: Alex Deucher <[email protected]>
CC: [email protected]
CC: "David (ChunMing) Zhou" <[email protected]>
CC: David Airlie <[email protected]> (maintainer:DRM DRIVERS)
CC: Lyude Paul <[email protected]>
CC: Rex Zhu <[email protected]>
CC: Jim Qu <[email protected]>
CC: [email protected]
CC: [email protected]
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions