regulator: 88pm8607: Fix off-by-one value range checking in the case of no id is matched

In the case of no id is matched, the variable i is equal to
ARRAY_SIZE(pm8607_regulator_info).

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/drivers/regulator/88pm8607.c b/drivers/regulator/88pm8607.c
index d63fddb..e821b21 100644
--- a/drivers/regulator/88pm8607.c
+++ b/drivers/regulator/88pm8607.c
@@ -412,7 +412,7 @@
 		if (info->desc.id == res->start)
 			break;
 	}
-	if ((i < 0) || (i > PM8607_ID_RG_MAX)) {
+	if (i == ARRAY_SIZE(pm8607_regulator_info)) {
 		dev_err(&pdev->dev, "Failed to find regulator %llu\n",
 			(unsigned long long)res->start);
 		return -EINVAL;