ASoC: soc-pcm: don't indicate error message for soc_pcm_hw_free()

soc_pcm_hw_free() never fail, error message is not needed.
We can't use void function for it, because it is used
part of struct snd_pcm_ops :: hw_free.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87czw1utaj.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-pcm.c

@@ -1862,10 +1862,7 @@ static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
 	dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name);
 
 	/* call hw_free on the frontend */
-	err = soc_pcm_hw_free(substream);
-	if (err < 0)
-		dev_err(fe->dev,"ASoC: hw_free FE %s failed\n",
-			fe->dai_link->name);
+	soc_pcm_hw_free(substream);
 
 	/* only hw_params backends that are either sinks or sources
 	 * to this frontend DAI */