crypto: chelsio - Fix an error code in chcr_hash_dma_map()

The dma_map_sg() function returns zero on error and positive values on
success.  We want to return -ENOMEM on failure here and zero on success.

Fixes: 2f47d5804311 ("crypto: chelsio - Move DMA un/mapping to chcr from lld cxgb4 driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c
index 300e66f..af08dd2 100644 (file)
--- a/drivers/crypto/chelsio/chcr_algo.c
+++ b/drivers/crypto/chelsio/chcr_algo.c
@@ -2410,7 +2410,7 @@ static inline int chcr_hash_dma_map(struct device *dev,
        error = dma_map_sg(dev, req->src, sg_nents(req->src),
                           DMA_TO_DEVICE);
        if (!error)
-               return error;
+               return -ENOMEM;
        req_ctx->is_sg_map = 1;
        return 0;
 }