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RDMA/umem: Don't check for a negative return value of dma_map_sg_attrs()
dma_map_sg_attrs() returns 0 on error and can't return a negative number (ensured by BUG_ON), so don't check. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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@ -206,7 +206,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
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DMA_BIDIRECTIONAL,
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dma_attrs);
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if (umem->nmap <= 0) {
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if (!umem->nmap) {
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ret = -ENOMEM;
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goto out;
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}
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