ASoC: soc-topology: fix modern dai link style

The topology code can create a FE DAI link but did not allocate the
memory for a platform component - whose name can be overridden at a
later time.

Fixes: 23b946ce ("ASoC: soc-topology: use modern dai_link style")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-topology.c

@@ -1882,8 +1882,8 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
 	struct snd_soc_dai_link_component *dlc;
 	int ret;
 
-	/* link + cpu + codec */
-	link = kzalloc(sizeof(*link) + (2 * sizeof(*dlc)), GFP_KERNEL);
+	/* link + cpu + codec + platform */
+	link = kzalloc(sizeof(*link) + (3 * sizeof(*dlc)), GFP_KERNEL);
 	if (link == NULL)
 		return -ENOMEM;
 
@@ -1891,9 +1891,11 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
 
 	link->cpus	= &dlc[0];
 	link->codecs	= &dlc[1];
+	link->platforms	= &dlc[2];
 
 	link->num_cpus	 = 1;
 	link->num_codecs = 1;
+	link->num_platforms = 1;
 
 	if (strlen(pcm->pcm_name)) {
 		link->name = kstrdup(pcm->pcm_name, GFP_KERNEL);
@@ -1907,6 +1909,8 @@ static int soc_tplg_fe_link_create(struct soc_tplg *tplg,
 	link->codecs->name = "snd-soc-dummy";
 	link->codecs->dai_name = "snd-soc-dummy-dai";
 
+	link->platforms->name = "snd-soc-dummy";
+
 	/* enable DPCM */
 	link->dynamic = 1;
 	link->dpcm_playback = le32_to_cpu(pcm->playback);