hwmon: (xgene-hwmon) Add free before exiting xgene_hwmon_probe

Call kfifo_free(&ctx->async_msg_fifo) before error exiting
instead of returning directly.

Signed-off-by: Peiwei Hu <jlu.hpw@foxmail.com>
Link: https://lore.kernel.org/r/tencent_C851C0324431466CBC22D60C5C6AC4A8E808@qq.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/xgene-hwmon.c

@@ -659,8 +659,10 @@ static int xgene_hwmon_probe(struct platform_device *pdev)
 
 		acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table,
 					    &pdev->dev);
-		if (!acpi_id)
-			return -EINVAL;
+		if (!acpi_id) {
+			rc = -EINVAL;
+			goto out_mbox_free;
+		}
 
 		version = (int)acpi_id->driver_data;