ASoC: omap-pcm: Free dma buffers in case of error.

Signed-off-by: Oleg Matcovschi <[e-mail]>
Acked-by: Peter Ujfalusi <[e-mail]>
Acked-by: Jarkko Nikula <[e-mail]>
Acked-by: Mark Brown <[e-mail]>
Signed-off-by: Liam Girdwood <[e-mail]>

sound/soc/omap/omap-pcm.c

···
 	}
 
 out:
+	/* free preallocated buffers in case of error */
+	if (ret)
+		omap_pcm_free_dma_buffers(pcm);
+
 	return ret;
 }