OPP: ti: Fix ti_opp_supply_probe wrong return values

Function ti_opp_supply_probe() since commit 6baee034 ("OPP: ti:
Migrate to dev_pm_opp_set_config_regulators()") returns wrong values
when all goes well and hence driver probing eventually fails.

Fixes: 6baee034 ("OPP: ti: Migrate to dev_pm_opp_set_config_regulators()")
Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

drivers/opp/ti-opp-supply.c

@@ -393,10 +393,12 @@ static int ti_opp_supply_probe(struct platform_device *pdev)
 	}
 
 	ret = dev_pm_opp_set_config_regulators(cpu_dev, ti_opp_config_regulators);
-	if (ret < 0)
+	if (ret < 0) {
 		_free_optimized_voltages(dev, &opp_data);
+		return ret;
+	}
 
-	return ret;
+	return 0;
 }
 
 static struct platform_driver ti_opp_supply_driver = {