PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus()

We are returning 0 even in case of errors, fix it.

Cc: 4.3 <[email protected]> # 4.3
Fixes: 8d4d4e9 ("PM / OPP: Add helpers for initializing CPU OPPs")
Reported-by: Dan Carpenter <[email protected]>
Reviewed-by: Stephen Boyd <[email protected]>
Signed-off-by: Viresh Kumar <[email protected]>

Author: vireshk

drivers/base/power/opp/cpu.c

@@ -153,7 +153,7 @@ int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
 out_rcu_read_unlock:
 	rcu_read_unlock();
 
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_set_sharing_cpus);