drm/amd/display: Adjust refactored dm for color management only

[Why]
Commit cdde482c is causing regression
from changing the order of call sequence.

[How]
Keep the call sequence and take in extra dm state only if plane-level
color management is enabled.

Fixes: cdde482c ("drm/amd/display: Refactor color management to take dm plane state")
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>