crypto: skcipher - remove redundant NULL check

Signed-off-by: NDavidlohr Bueso <dave@gnu.org>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

crypto/ablkcipher.c

@@ -141,8 +141,7 @@ int ablkcipher_walk_done(struct ablkcipher_request *req,
 
 	if (walk->iv != req->info)
 		memcpy(req->info, walk->iv, tfm->crt_ablkcipher.ivsize);
-	if (walk->iv_buffer)
-		kfree(walk->iv_buffer);
+	kfree(walk->iv_buffer);
 
 	return err;
 }