leds: mt6323: Fix an off by one bug in probe

It should be ">= MT6323_MAX_LEDS" instead of ">".  Also "reg" is a u32
so it can't be negative and we can remove the test for negative values.

Fixes: 216ec6cc4c19 ("leds: Add LED support for MT6323 PMIC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

drivers/leds/leds-mt6323.c

@@ -417,7 +417,7 @@ static int mt6323_led_probe(struct platform_device *pdev)
 			goto put_child_node;
 		}
 
-		if (reg < 0 || reg > MT6323_MAX_LEDS || leds->led[reg]) {
+		if (reg >= MT6323_MAX_LEDS || leds->led[reg]) {
 			dev_err(dev, "Invalid led reg %u\n", reg);
 			ret = -EINVAL;
 			goto put_child_node;