[PATCH v4 05/15] drivers/firmware/sdei: Unregister driver on error in sdei_init()

[Gavin Shan]

The platform driver needs to be unregistered on error to create the
platform device, so that the state is restored to original one.

Besides, the errno (@ret) should be updated acccording in that case.

Signed-off-by: Gavin Shan <gshan at redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron at huawei.com>
---
 drivers/firmware/arm_sdei.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index c9f2bedfb6b5..909f27abf8a7 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -1090,9 +1090,12 @@ static int __init sdei_init(void)
 
 	pdev = platform_device_register_simple(sdei_driver.driver.name,
 					       0, NULL, 0);
-	if (IS_ERR(pdev))
-		pr_info("Failed to register ACPI:SDEI platform device %ld\n",
-			PTR_ERR(pdev));
+	if (IS_ERR(pdev)) {
+		ret = PTR_ERR(pdev);
+		platform_driver_unregister(&sdei_driver);
+		pr_info("Failed to register ACPI:SDEI platform device %d\n",
+			ret);
+	}
 
 	return ret;
 }
-- 
2.23.0