drm/amd/display: Fix CAB allocation calculation

[Description]
Accidentally added when should have subtracted
in calculation

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alvin Lee 2022-09-15 11:32:19 -04:00 • committed by Alex Deucher
commit 5caa63c7b7