drm/amd/pm: Fix the return value in default case

Fix the return value in default case and drop
redundant 'break'.

Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ma Jun 2023-10-18 15:17:40 +08:00 • committed by Alex Deucher
commit d8da213478