regulator: fixed regulator_bulk_enable unwinding code

Unwinding code disables all successfully enabled regulators.
Error is logged for every failed regulator.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/regulator/core.c

@@ -3057,9 +3057,13 @@ int regulator_bulk_enable(int num_consumers,
 	return 0;
 
 err:
-	pr_err("Failed to enable %s: %d\n", consumers[i].supply, ret);
-	while (--i >= 0)
-		regulator_disable(consumers[i].consumer);
+	for (i = 0; i < num_consumers; i++) {
+		if (consumers[i].ret < 0)
+			pr_err("Failed to enable %s: %d\n", consumers[i].supply,
+			       consumers[i].ret);
+		else
+			regulator_disable(consumers[i].consumer);
+	}
 
 	return ret;
 }