crypto: chtls - simplify a bit 'create_flowc_wr_skb()'

Use '__skb_put_data()' instead of rewritting it.
This improves readability.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/chelsio/chtls/chtls_io.c

@@ -97,7 +97,7 @@ static struct sk_buff *create_flowc_wr_skb(struct sock *sk,
 	if (!skb)
 		return NULL;
 
-	memcpy(__skb_put(skb, flowclen), flowc, flowclen);
+	__skb_put_data(skb, flowc, flowclen);
 	skb_set_queue_mapping(skb, (csk->txq_idx << 1) | CPL_PRIORITY_DATA);
 
 	return skb;