ALSA: oxfw: fix memory leak for model-dependent data at error path

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: <stable@vger.kernel.org> # v4.7+
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index fd34ef2ac679..75c6ba2fe3dc 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -271,6 +271,8 @@ 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);
 }