[PATCH] misc: ocxl: fix possible name leak in ocxl_file_register_afu()

[Yang Yingliang]

If device_register() returns error in ocxl_file_register_afu(),
the name allocated by dev_set_name() need be freed. As comment
of device_register() says, it should use put_device() to give
up the reference in the error path. So fix this by calling
put_device(), then the name can be freed in kobject_cleanup(),
and info is freed in info_release().

Fixes: 75ca758adbaf ("ocxl: Create a clear delineation between ocxl backend & frontend")
Signed-off-by: Yang Yingliang <yangyingliang at huawei.com>
---
 drivers/misc/ocxl/file.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c
index d46dba2df5a1..452d5777a0e4 100644
--- a/drivers/misc/ocxl/file.c
+++ b/drivers/misc/ocxl/file.c
@@ -541,8 +541,11 @@ int ocxl_file_register_afu(struct ocxl_afu *afu)
 		goto err_put;
 
 	rc = device_register(&info->dev);
-	if (rc)
-		goto err_put;
+	if (rc) {
+		free_minor(info);
+		put_device(&info->dev);
+		return rc;
+	}
 
 	rc = ocxl_sysfs_register_afu(info);
 	if (rc)
-- 
2.25.1