From 1b24b8c070230d4a539063ca3291233fa0cd80a6 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Mon, 13 Mar 2017 09:53:57 -0300
Subject: cx231xx-audio: fix init error path

commit fff1abc4d54e469140a699612b4db8d6397bfcba upstream.

Make sure to release the snd_card also on a late allocation error.

Fixes: e0d3bafd0258 ("V4L/DVB (10954): Add cx231xx USB driver")

Cc: Sri Deevi <Srinivasa.Deevi@conexant.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/usb/cx231xx/cx231xx-audio.c b/drivers/media/usb/cx231xx/cx231xx-audio.c
index 8263c4b..2ca713b 100644
--- a/drivers/media/usb/cx231xx/cx231xx-audio.c
+++ b/drivers/media/usb/cx231xx/cx231xx-audio.c
@@ -674,10 +674,8 @@ static int cx231xx_audio_init(struct cx231xx *dev)
 
 	spin_lock_init(&adev->slock);
 	err = snd_pcm_new(card, "Cx231xx Audio", 0, 0, 1, &pcm);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto err_free_card;
 
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 			&snd_cx231xx_pcm_capture);
@@ -691,10 +689,9 @@ static int cx231xx_audio_init(struct cx231xx *dev)
 	INIT_WORK(&dev->wq_trigger, audio_trigger);
 
 	err = snd_card_register(card);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto err_free_card;
+
 	adev->sndcard = card;
 	adev->udev = dev->udev;
 
@@ -713,9 +710,10 @@ static int cx231xx_audio_init(struct cx231xx *dev)
 		"audio EndPoint Addr 0x%x, Alternate settings: %i\n",
 		adev->end_point_addr, adev->num_alt);
 	adev->alt_max_pkt_size = kmalloc(32 * adev->num_alt, GFP_KERNEL);
-
-	if (adev->alt_max_pkt_size == NULL)
-		return -ENOMEM;
+	if (!adev->alt_max_pkt_size) {
+		err = -ENOMEM;
+		goto err_free_card;
+	}
 
 	for (i = 0; i < adev->num_alt; i++) {
 		u16 tmp =
@@ -729,6 +727,11 @@ static int cx231xx_audio_init(struct cx231xx *dev)
 	}
 
 	return 0;
+
+err_free_card:
+	snd_card_free(card);
+
+	return err;
 }
 
 static int cx231xx_audio_fini(struct cx231xx *dev)
-- 
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