ALSA: fireworks: fix memory leak of response buffer at error path

After allocating memory object for response buffer, ALSA fireworks
driver has leak of the memory object at error path.

This commit releases the object at the error path.

Fixes: 7d3c1d5901aa('ALSA: fireworks: 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>

diff --git a/sound/firewire/fireworks/fireworks.c b/sound/firewire/fireworks/fireworks.c
index 71a0613d3da040c49ef633f4877f98d8db219a99..f2d073365cf6365e5d3e5c841a7288a93c5b1ec5 100644 (file)
--- a/sound/firewire/fireworks/fireworks.c
+++ b/sound/firewire/fireworks/fireworks.c
@@ -301,6 +301,8 @@ error:
        snd_efw_transaction_remove_instance(efw);
        snd_efw_stream_destroy_duplex(efw);
        snd_card_free(efw->card);
+       kfree(efw->resp_buf);
+       efw->resp_buf = NULL;
        dev_info(&efw->unit->device,
                 "Sound card registration failed: %d\n", err);
 }