[patch] crypto: chcr - checking for IS_ERR() instead of NULL

[Dan Carpenter]

The create_hash_wr() function never returns error pointers.  It returns
NULL on error.

Fixes: 358961d1cd1e ("crypto: chcr - Added new structure chcr_wr")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/crypto/chelsio/chcr_algo.c 
b/drivers/crypto/chelsio/chcr_algo.c
index 32361dd..2ed1e24 100644
--- a/drivers/crypto/chelsio/chcr_algo.c
+++ b/drivers/crypto/chelsio/chcr_algo.c
@@ -958,9 +958,8 @@ static int chcr_ahash_update(struct ahash_request *req)
        req_ctx->result = 0;
        req_ctx->data_len += params.sg_len + params.bfr_len;
        skb = create_hash_wr(req, &params);
-
-       if (IS_ERR(skb))
-               return PTR_ERR(skb);
+       if (!skb)
+               return -ENOMEM;
 
        if (remainder) {
                u8 *temp;
@@ -1023,8 +1022,8 @@ static int chcr_ahash_final(struct ahash_request *req)
                params.more = 0;
        }
        skb = create_hash_wr(req, &params);
-       if (IS_ERR(skb))
-               return PTR_ERR(skb);
+       if (!skb)
+               return -ENOMEM;
 
        skb->dev = u_ctx->lldi.ports[0];
        set_wr_txq(skb, CPL_PRIORITY_DATA, ctx->tx_channel_id);
@@ -1074,8 +1073,8 @@ static int chcr_ahash_finup(struct ahash_request *req)
        }
 
        skb = create_hash_wr(req, &params);
-       if (IS_ERR(skb))
-               return PTR_ERR(skb);
+       if (!skb)
+               return -ENOMEM;
 
        skb->dev = u_ctx->lldi.ports[0];
        set_wr_txq(skb, CPL_PRIORITY_DATA, ctx->tx_channel_id);
@@ -1125,8 +1124,8 @@ static int chcr_ahash_digest(struct ahash_request *req)
        }
 
        skb = create_hash_wr(req, &params);
-       if (IS_ERR(skb))
-               return PTR_ERR(skb);
+       if (!skb)
+               return -ENOMEM;
 
        skb->dev = u_ctx->lldi.ports[0];
        set_wr_txq(skb, CPL_PRIORITY_DATA, ctx->tx_channel_id);
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