ASoC: topology: Check return value for soc_tplg_pcm_create()

The return value of soc_tplg_pcm_create() is currently not checked
in soc_tplg_pcm_elems_load(). If an error is to occur there, the
topology ignores it and continues loading.

Fix that by checking the status and rejecting the topology on error.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Dragos Tarcatu <dragos_tarcatu@mentor.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191210003939.15752-3-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-topology.c

@@ -2046,6 +2046,7 @@ static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg,
 	int size;
 	int i;
 	bool abi_match;
+	int ret;
 
 	count = le32_to_cpu(hdr->count);
 
@@ -2087,7 +2088,12 @@ static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg,
 		}
 
 		/* create the FE DAIs and DAI links */
-		soc_tplg_pcm_create(tplg, _pcm);
+		ret = soc_tplg_pcm_create(tplg, _pcm);
+		if (ret < 0) {
+			if (!abi_match)
+				kfree(_pcm);
+			return ret;
+		}
 
 		/* offset by version-specific struct size and
 		 * real priv data size