[PATCH] drm/msm: remove unneeded variable ret

[Stephen Boyd]

Quoting Bernard Zhao (2021-04-07 06:06:21)
> This patch fix coccicheck warning:
> drivers/gpu/drm/msm/dp/dp_link.c:848:5-8: Unneeded variable: "ret". Return "0" on line 880
> Also remove unneeded function return value check.
> 
> Signed-off-by: Bernard Zhao <bernard at vivo.com>
> ---

Reviewed-by: Stephen Boyd <swboyd at chromium.org>