drm/amd/display: remove redundant vertical_line_start variable

Return value from expression directly instead of
taking this in another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Jinpeng Cui <cui.jinpeng2@zte.com.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jinpeng Cui 2022-08-29 12:13:20 +00:00 • committed by Alex Deucher
commit 74d834044e