drm/amd/display: Remove dead code in dm_dp_mst_get_modes

[WHAT]
Remove unreachable null check on aconnector after container_of,
and redundant dc_sink checks where dc_sink is guaranteed non-NULL
after earlier null-check with early return.

Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Hung 2026-05-25 13:12:16 -06:00 • committed by Alex Deucher
commit 7c030f8df2