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swiotlb: remove an unecessary NULL check

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Smatch complains here:

    lib/swiotlb.c:730 swiotlb_alloc_buffer()
    warn: variable dereferenced before check 'dev' (see line 716)

"dev" isn't ever NULL in this function so we can just remove the check.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Dan Carpenter 2018-04-05 14:19:11 +03:00 committed by Christoph Hellwig
parent 3d6ce86ee7
commit 698733fbdf
1 changed files with 1 additions and 1 deletions
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2
lib/swiotlb.c
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@ -727,7 +727,7 @@ swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle,
out_unmap:
dev_warn(dev, "hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n",
(unsigned long long)(dev ? dev->coherent_dma_mask : 0),
(unsigned long long)dev->coherent_dma_mask,
(unsigned long long)*dma_handle);
/*