crypto: chtls - remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/chelsio/chtls/chtls_cm.c

@@ -234,8 +234,7 @@ static void chtls_send_reset(struct sock *sk, int mode, struct sk_buff *skb)
 
 	return;
 out:
-	if (skb)
-		kfree_skb(skb);
+	kfree_skb(skb);
 }
 
 static void release_tcp_port(struct sock *sk)

drivers/crypto/chelsio/chtls/chtls_main.c

@@ -272,8 +272,7 @@ static void chtls_free_uld(struct chtls_dev *cdev)
 	for (i = 0; i < (1 << RSPQ_HASH_BITS); i++)
 		kfree_skb(cdev->rspq_skb_cache[i]);
 	kfree(cdev->lldi);
-	if (cdev->askb)
-		kfree_skb(cdev->askb);
+	kfree_skb(cdev->askb);
 	kfree(cdev);
 }