[PATCH 4.9 10/44] ALSA: oxfw: fix memory leak for model-dependent data at error path

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Sakamoto <o-taka...@sakamocchi.jp>

commit ce925f088b979537f22f9e05eb923ef9822ca139 upstream.

After allocating model-dependent data, ALSA OXFW driver has memory leak
of the data at error path.

This commit releases the data at the error path.

Fixes: 6c29230e2a5f ('ALSA: oxfw: delayed registration of sound card')
Cc: <sta...@vger.kernel.org> # v4.7+
Signed-off-by: Takashi Sakamoto <o-taka...@sakamocchi.jp>
Signed-off-by: Takashi Iwai <ti...@suse.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 sound/firewire/oxfw/oxfw.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -275,6 +275,8 @@ error:
        if (oxfw->has_output)
                snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->tx_stream);
        snd_card_free(oxfw->card);
+       kfree(oxfw->spec);
+       oxfw->spec = NULL;
        dev_info(&oxfw->unit->device,
                 "Sound card registration failed: %d\n", err);
 }