mmc: sdhci-of-arasan: Remove uninitialized ret variables

mmc: sdhci-of-arasan: Remove uninitialized ret variables

Clang warns:

drivers/mmc/host/sdhci-of-arasan.c:784:9: warning: variable 'ret' is
uninitialized when used here [-Wuninitialized]
        return ret;
               ^~~
drivers/mmc/host/sdhci-of-arasan.c:738:9: note: initialize the variable
'ret' to silence this warning
        int ret;
               ^
                = 0
drivers/mmc/host/sdhci-of-arasan.c:860:9: warning: variable 'ret' is
uninitialized when used here [-Wuninitialized]
        return ret;
               ^~~
drivers/mmc/host/sdhci-of-arasan.c:810:9: note: initialize the variable
'ret' to silence this warning
        int ret;
               ^
                = 0
2 warnings generated.

This looks like a copy paste error. Neither function has handling that
needs ret so just remove it and return 0 directly.

Link: https://github.com/ClangBuiltLinux/linux/issues/996
Reported-by: kernelci.org bot <bot@kernelci.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20200416182402.16858-1-natechancellor@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>