[PATCH] ASoC: uniphier: fix an error code in uniphier_aio_comprdma_new()

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

The dma_mapping_error() returns true or false, but we want to return
-ENOMEM if there was an error.

Fixes: e98131222ff9 ("ASoC: uniphier: add support for UniPhier AIO compress audio")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/sound/soc/uniphier/aio-compress.c b/sound/soc/uniphier/aio-compress.c
index 7f7abe3ae99d..4751c8bdabec 100644
--- a/sound/soc/uniphier/aio-compress.c
+++ b/sound/soc/uniphier/aio-compress.c
@@ -54,12 +54,11 @@ static int uniphier_aio_comprdma_new(struct snd_soc_pcm_runtime *rtd)
 		dma_dir = DMA_TO_DEVICE;
 
 	sub->compr_addr = dma_map_single(dev, sub->compr_area, size, dma_dir);
-	ret = dma_mapping_error(dev, sub->compr_addr);
-	if (ret) {
+	if (dma_mapping_error(dev, sub->compr_addr)) {
 		kfree(sub->compr_area);
 		sub->compr_area = NULL;
 
-		return ret;
+		return -ENOMEM;
 	}
 
 	sub->compr_bytes = size;
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