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net: mediatek: add missing return code check

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The code fails to check if the scratch memory was properly allocated. Add
this check and return with an error if the allocation failed.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Crispin 2016-06-10 13:27:58 +02:00 • committed by David S. Miller
parent 0b392be9a8
commit 562c5a7040
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@ -495,6 +495,9 @@ static int mtk_init_fq_dma(struct mtk_eth *eth)
eth->scratch_head = kcalloc(cnt, MTK_QDMA_PAGE_SIZE,
GFP_KERNEL);
if (unlikely(!eth->scratch_head))
return -ENOMEM;
dma_addr = dma_map_single(eth->dev,
eth->scratch_head, cnt * MTK_QDMA_PAGE_SIZE,
DMA_FROM_DEVICE);