nfp: reorder variables in nfp_net_tx()

Reorder variables longest to shortest to comply with netdev coding style.
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/nfp_net_common.c

@@ -739,10 +739,10 @@ static int nfp_net_tx(struct sk_buff *skb, struct net_device *netdev)
 {
 	struct nfp_net *nn = netdev_priv(netdev);
 	const struct skb_frag_struct *frag;
-	struct nfp_net_r_vector *r_vec;
 	struct nfp_net_tx_desc *txd, txdg;
-	struct nfp_net_tx_buf *txbuf;
 	struct nfp_net_tx_ring *tx_ring;
+	struct nfp_net_r_vector *r_vec;
+	struct nfp_net_tx_buf *txbuf;
 	struct netdev_queue *nd_q;
 	dma_addr_t dma_addr;
 	unsigned int fsize;