ALSA: core: Fix leaks at snd_card_init() error paths

When the snd_card object is initialized internally in snd_card_init(),
the error path of card->value_buf allocation returns straightly as an
error without invoking the destructor, which would leak resources.

Also, the other error paths in snd_card_init() release the card object
only via put_device(), and this misses the cleanups that are done in
snd_card_disconnect(); namely, the reserved slot bit in snd_cards_lock
is never cleared, so the card index remains occupied, and the debugfs
directory created for the card is left over.

Fix them by calling snd_card_free() at the error path, which performs
both the disconnection and the release properly.  As snd_card_free()
calls snd_device_free_all() internally, the explicit call is dropped,
and the error labels are unified.

Fixes: 84446536f63d ("ALSA: control: Verify put() result when in debug mode")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20261007172533.14667-7-tiwai@suse.de

0 files changed, 0 insertions, 0 deletions