exynos-cpufreq: fix false return check from "regulator_set_voltage"
exynos-cpufreq: fix false return check from "regulator_set_voltage"

Currently, code checks false return value from "regulator_set_voltage"
to show failure message. Modify the code to check proper return
value from "regulator_set_voltage".

Signed-off-by: Manish Badarkhe <227975c36604f4edcba69fb2c44a00e46ac90635@gmail.com>
Acked-by: Viresh Kumar <5ff32272b3d9f86512eddc8e0af523fc6f7924e5@linaro.org>
Signed-off-by: Rafael J. Wysocki <27ffc44a8ec6a212fba98cfc3246c6ce8ab131e0@intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs