[PATCH] ALSA: ac97: fix possible memory leak in snd_ac97_dev_register()

[Yang Yingliang]

If device_register() fails in snd_ac97_dev_register(), it should
call put_device() to give up reference, or the name allocated in
dev_set_name() is leaked.

Fixes: 0ca06a00e206 ("[ALSA] AC97 bus interface for ad-hoc drivers")
Signed-off-by: Yang Yingliang <yangyingliang at huawei.com>
---
 sound/pci/ac97/ac97_codec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index cb60a07d39a8..ceead55f13ab 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -2009,6 +2009,7 @@ static int snd_ac97_dev_register(struct snd_device *device)
 	err = device_register(&ac97->dev);
 	if (err < 0) {
 		ac97_err(ac97, "Can't register ac97 bus\n");
+		put_device(&ac97->dev);
 		ac97->dev.bus = NULL;
 		return err;
 	}
-- 
2.25.1