drm/amd/display: remove no need NULL check before kfree

This change is to cleanup the code a bit.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Bernard Zhao <bernard@vivo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bernard Zhao 2021-11-15 17:47:50 -08:00 • committed by Alex Deucher
commit 13d20aabd6