crypto: pcrypt - Handle crypto_get_attr_type errors

I was concerned about the error handling for crypto_get_attr_type() in
pcrypt_alloc_aead().  Steffen Klassert pointed out that we could simply
avoid calling crypto_get_attr_type() if we passed the type and mask as a
parameters.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 4 insertions, 7 deletions

diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index 80201241b698..247178cb98ec 100644
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -315,16 +315,13 @@ out_free_inst:
         goto out;
 }
 
-static struct crypto_instance *pcrypt_alloc_aead(struct rtattr **tb)
+static struct crypto_instance *pcrypt_alloc_aead(struct rtattr **tb,
+                                                 u32 type, u32 mask)
 {
         struct crypto_instance *inst;
         struct crypto_alg *alg;
-        struct crypto_attr_type *algt;
-
-        algt = crypto_get_attr_type(tb);
 
-        alg = crypto_get_attr_alg(tb, algt->type,
-                                  (algt->mask & CRYPTO_ALG_TYPE_MASK));
+        alg = crypto_get_attr_alg(tb, type, (mask & CRYPTO_ALG_TYPE_MASK));
         if (IS_ERR(alg))
                 return ERR_CAST(alg);
 
@@ -365,7 +362,7 @@ static struct crypto_instance *pcrypt_alloc(struct rtattr **tb)
 
         switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) {
         case CRYPTO_ALG_TYPE_AEAD:
-                return pcrypt_alloc_aead(tb);
+                return pcrypt_alloc_aead(tb, algt->type, algt->mask);
         }
 
         return ERR_PTR(-EINVAL);