crypto: use ERR_CAST

Replace PTR_ERR followed by ERR_PTR by ERR_CAST, to be more concise.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression err,x;
@@
-       err = PTR_ERR(x);
        if (IS_ERR(x))
-                return ERR_PTR(err);
+                return ERR_CAST(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 2 deletions

diff --git a/crypto/ctr.c b/crypto/ctr.c
index 4ca7222cfeb6..095dcb66d72d 100644
--- a/crypto/ctr.c
+++ b/crypto/ctr.c
@@ -334,9 +334,8 @@ static struct crypto_instance *crypto_rfc3686_alloc(struct rtattr **tb)
 
         alg = crypto_attr_alg(tb[1], CRYPTO_ALG_TYPE_BLKCIPHER,
                                   CRYPTO_ALG_TYPE_MASK);
-        err = PTR_ERR(alg);
         if (IS_ERR(alg))
-                return ERR_PTR(err);
+                return ERR_CAST(alg);
 
         /* We only support 16-byte blocks. */
         err = -EINVAL;