[PATCH] drm/msm: remove no need local variable

[Stephen Boyd]

Quoting Bernard Zhao (2021-06-05 05:35:20)
> Unneeded variable: "ret". Return "0" on line 880

But the variable is "rc".

>
> Signed-off-by: Bernard Zhao <bernard at vivo.com>
> ---

Otherwise

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