ASoC: Revert "ASoC: soc-generic-dmaengine-pcm: Fix error handling"

This reverts commit f91b1e73.

As explained by Lars-Peter Clausen:

"This creates a resource leak. dmaengine_pcm_request_chan_of() requests
bothtransmit and receive channels. It might return with an error if one
of them fails, but the other one succeeded. In this case we need to call
dmaengine_pcm_release_chan() to free the requested channel"

So revert the commit.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-generic-dmaengine-pcm.c

@@ -504,7 +504,7 @@ int snd_dmaengine_pcm_register(struct device *dev,
 
 	ret = dmaengine_pcm_request_chan_of(pcm, dev, config);
 	if (ret)
-		goto err_free_pcm;
+		goto err_free_dma;
 
 	if (config && config->process)
 		ret = snd_soc_add_component(dev, &pcm->component,
@@ -520,7 +520,6 @@ int snd_dmaengine_pcm_register(struct device *dev,
 
 err_free_dma:
 	dmaengine_pcm_release_chan(pcm);
-err_free_pcm:
 	kfree(pcm);
 	return ret;
 }