ASoC: Intel: avs: Split pcm pages freeing operation from hw_free()

Prepare for introduction of PCM power management support. As freeing
pages during the suspend operation is not desired, separate
snd_pcm_lib_free_pages() from existing avs_dai_fe_hw_free() so that
majority of the code found within it can be reused for standard and PM
flows both.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20221027124702.1761002-2-cezary.rojewski@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/avs/pcm.c

@@ -499,7 +499,7 @@ static int avs_dai_fe_hw_params(struct snd_pcm_substream *substream,
 	return ret;
 }
 
-static int avs_dai_fe_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+static int __avs_dai_fe_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 {
 	struct avs_dma_data *data;
 	struct hdac_ext_stream *host_stream;
@@ -523,9 +523,15 @@ static int avs_dai_fe_hw_free(struct snd_pcm_substream *substream, struct snd_so
 	snd_hdac_stream_cleanup(hdac_stream(host_stream));
 	hdac_stream(host_stream)->prepared = false;
 
-	ret = snd_pcm_lib_free_pages(substream);
-	if (ret < 0)
-		dev_dbg(dai->dev, "Failed to free pages!\n");
+	return ret;
+}
+
+static int avs_dai_fe_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+	int ret;
+
+	ret = __avs_dai_fe_hw_free(substream, dai);
+	snd_pcm_lib_free_pages(substream);
 
 	return ret;
 }