[PATCH 5.15 551/731] macintosh: fix possible memory leak in macio_add_one_device()

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From: Yang Yingliang <yangyingliang@xxxxxxxxxx>

[ Upstream commit 5ca86eae55a2f006e6c1edd2029b2cacb6979515 ]

Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's
bus_id string array"), the name of device is allocated dynamically. It
needs to be freed when of_device_register() fails. Call put_device() to
give up the reference that's taken in device_initialize(), so that it
can be freed in kobject_cleanup() when the refcount hits 0.

macio device is freed in macio_release_dev(), so the kfree() can be
removed.

Fixes: 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221104032551.1075335-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/macintosh/macio_asic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index c1fdf2896021..df69d648f6d0 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -423,7 +423,7 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
 	if (of_device_register(&dev->ofdev) != 0) {
 		printk(KERN_DEBUG"macio: device registration error for %s!\n",
 		       dev_name(&dev->ofdev.dev));
-		kfree(dev);
+		put_device(&dev->ofdev.dev);
 		return NULL;
 	}
 
-- 
2.35.1






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