backlight: ams369fg06: Remove 'else' after a return

Fixed the following checkpatch warning.

  WARNING: else is not generally useful after a break or return
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/video/backlight/ams369fg06.c

@@ -325,10 +325,10 @@ static int ams369fg06_power_on(struct ams369fg06 *lcd)
 	if (!pd->reset) {
 		dev_err(lcd->dev, "reset is NULL.\n");
 		return -EINVAL;
-	} else {
+	}
+
 	pd->reset(lcd->ld);
 	msleep(pd->reset_delay);
-	}
 
 	ret = ams369fg06_ldi_init(lcd);
 	if (ret) {