af_key: remove some pointless conditionals before kfree_skb()

Remove some pointless conditionals before kfree_skb().

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 7dcbde3..643c1be 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -313,8 +313,7 @@
 	if (one_sk != NULL)
 		err = pfkey_broadcast_one(skb, &skb2, allocation, one_sk);
 
-	if (skb2)
-		kfree_skb(skb2);
+	kfree_skb(skb2);
 	kfree_skb(skb);
 	return err;
 }
@@ -3573,8 +3572,7 @@
 out:
 	if (err && hdr && pfkey_error(hdr, err, sk) == 0)
 		err = 0;
-	if (skb)
-		kfree_skb(skb);
+	kfree_skb(skb);
 
 	return err ? : len;
 }