dm: power: Don't return an error when regulators are not autoset

Not all regulators can be set up automatically. Adjust the code so that
regulators_enable_boot_on() will return success when some are skipped.
Only genuine errors are reported.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>

drivers/power/regulator/regulator-uclass.c

@@ -319,8 +319,10 @@ int regulators_enable_boot_on(bool verbose)
 	     dev && !ret;
 	     uclass_next_device(&dev)) {
 		ret = regulator_autoset(dev);
-		if (ret == -EMEDIUMTYPE)
+		if (ret == -EMEDIUMTYPE) {
+			ret = 0;
 			continue;
+		}
 		if (verbose)
 			regulator_show(dev, ret);
 	}