[patch] pcrypt: handle crypto_get_attr_type() errors

[Dan Carpenter]

crypto_get_attr_type() can returns ERR_PTRs if there is a problem. 

Signed-off-by: Dan Carpenter <erro...@gmail.com>

diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index 8020124..41bd80f 100644
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -322,6 +322,8 @@ static struct crypto_instance *pcrypt_alloc_aead(struct 
rtattr **tb)
        struct crypto_attr_type *algt;
 
        algt = crypto_get_attr_type(tb);
+       if (IS_ERR(algt))
+               return ERR_CAST(algt);
 
        alg = crypto_get_attr_alg(tb, algt->type,
                                  (algt->mask & CRYPTO_ALG_TYPE_MASK));
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