ASoC: topology: fix memory leaks on sm, se and sbe

Currently when a kstrdup fails the error exit paths don't free
the allocations for sm, se and sbe.  This can be fixed by assigning
kc[i].private_value to these before doing the ksrtdup so that the error
exit path will be able to free these objects.

Addresses-Coverity: ("Resource leak")
Fixes: 9f90af3a9952 ("ASoC: topology: Consolidate and fix asoc_tplg_dapm_widget_*_create flow")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index fc1f1d6..dc463f1 100644 (file)
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1326,10 +1326,10 @@ static struct snd_kcontrol_new *soc_tplg_dapm_widget_dmixer_create(
                dev_dbg(tplg->dev, " adding DAPM widget mixer control %s at %d\n",
                        mc->hdr.name, i);
 
+               kc[i].private_value = (long)sm;
                kc[i].name = kstrdup(mc->hdr.name, GFP_KERNEL);
                if (kc[i].name == NULL)
                        goto err_sm;
-               kc[i].private_value = (long)sm;
                kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
                kc[i].access = mc->hdr.access;
 
@@ -1412,10 +1412,10 @@ static struct snd_kcontrol_new *soc_tplg_dapm_widget_denum_create(
                dev_dbg(tplg->dev, " adding DAPM widget enum control %s\n",
                        ec->hdr.name);
 
+               kc[i].private_value = (long)se;
                kc[i].name = kstrdup(ec->hdr.name, GFP_KERNEL);
                if (kc[i].name == NULL)
                        goto err_se;
-               kc[i].private_value = (long)se;
                kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
                kc[i].access = ec->hdr.access;
 
@@ -1524,10 +1524,10 @@ static struct snd_kcontrol_new *soc_tplg_dapm_widget_dbytes_create(
                        "ASoC: adding bytes kcontrol %s with access 0x%x\n",
                        be->hdr.name, be->hdr.access);
 
+               kc[i].private_value = (long)sbe;
                kc[i].name = kstrdup(be->hdr.name, GFP_KERNEL);
                if (kc[i].name == NULL)
                        goto err_sbe;
-               kc[i].private_value = (long)sbe;
                kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
                kc[i].access = be->hdr.access;