platform/x86: asus-wmi: remove unneeded semicolon

Eliminate the following coccicheck warning:
./drivers/platform/x86/asus-wmi.c:2386:2-3: Unneeded semicolon
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1637719332-45224-1-git-send-email-yang.lee@linux.alibaba.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/asus-wmi.c

@@ -2383,7 +2383,7 @@ static ssize_t fan_curve_enable_store(struct device *dev,
 		break;
 	default:
 		return -EINVAL;
-	};
+	}
 
 	if (data->enabled) {
 		err = fan_curve_write(asus, data);