drm/amdgpu/dm/mst: Remove unnecessary NULL check

kfree() checks this automatically.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lyude Paul 2019-09-26 18:51:04 -04:00 • committed by Alex Deucher
commit d7a1b559f3