backlight: s6e63m0: 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 <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/video/backlight/s6e63m0.c

···
 	if (!pd->power_on) {
 		dev_err(lcd->dev, "power_on is NULL.\n");
 		return -EINVAL;
-	} else {
-		pd->power_on(lcd->ld, 1);
-		msleep(pd->power_on_delay);
 	}
+
+	pd->power_on(lcd->ld, 1);
+	msleep(pd->power_on_delay);
 
 	if (!pd->reset) {
 		dev_err(lcd->dev, "reset is NULL.\n");
 		return -EINVAL;
-	} else {
-		pd->reset(lcd->ld);
-		msleep(pd->reset_delay);
 	}
+
+	pd->reset(lcd->ld);
+	msleep(pd->reset_delay);
 
 	ret = s6e63m0_ldi_init(lcd);
 	if (ret) {