From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 10 Nov 2017 00:25:43 +0300
Subject: crypto: chelsio - Fix an error code in chcr_hash_dma_map()
Patch-mainline: v4.16-rc1
Git-commit: 7814f552ff826fefa5e1b24083c7a06a9378e9ef
References: bsc#1097585 bsc#1097586 bsc#1097587 bsc#1097588 bsc#1097583 bsc#1097584

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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/crypto/chelsio/chcr_algo.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/crypto/chelsio/chcr_algo.c
+++ b/drivers/crypto/chelsio/chcr_algo.c
@@ -2416,7 +2416,7 @@ static inline int chcr_hash_dma_map(stru
 	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;
 }