netdev - [patch] net: ethernet: micrel: fix an error code

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Message-ID: <20150814085459.GC30728@mwanda>
Date:	Fri, 14 Aug 2015 11:54:59 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Vinod Koul <vinod.koul@...el.com>
Cc:	Vinod Koul <vinod.koul@...el.com>, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch] net: ethernet: micrel: fix an error code

The dma_mapping_error() function returns true or false.  We should
return -ENOMEM if it there is a dma mapping error.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/net/ethernet/micrel/ks8842.c b/drivers/net/ethernet/micrel/ks8842.c
index f78909a..09d2e16 100644
--- a/drivers/net/ethernet/micrel/ks8842.c
+++ b/drivers/net/ethernet/micrel/ks8842.c
@@ -952,9 +952,8 @@ static int ks8842_alloc_dma_bufs(struct net_device *netdev)
 
 	sg_dma_address(&tx_ctl->sg) = dma_map_single(adapter->dev,
 		tx_ctl->buf, DMA_BUFFER_SIZE, DMA_TO_DEVICE);
-	err = dma_mapping_error(adapter->dev,
-		sg_dma_address(&tx_ctl->sg));
-	if (err) {
+	if (dma_mapping_error(adapter->dev, sg_dma_address(&tx_ctl->sg))) {
+		err = -ENOMEM;
 		sg_dma_address(&tx_ctl->sg) = 0;
 		goto err;
 	}
--
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