216929d15b
[ Upstream commit09f662f953] Return error number instead of 0 on failures. Fixes:a1e8c13600("PM / OPP: "opp-hz" is optional for power domains") Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>