phonet: use for_each_set_bit()

Replace open-coded loop with for_each_set_bit().
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/phonet/pn_dev.c

@@ -107,8 +107,7 @@ static void phonet_device_destroy(struct net_device *dev)
 	if (pnd) {
 		u8 addr;
 
-		for (addr = find_first_bit(pnd->addrs, 64); addr < 64;
-			addr = find_next_bit(pnd->addrs, 64, 1+addr))
+		for_each_set_bit(addr, pnd->addrs, 64)
 			phonet_address_notify(RTM_DELADDR, dev, addr);
 		kfree(pnd);
 	}

net/phonet/pn_netlink.c

@@ -141,8 +141,7 @@ static int getaddr_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
 			continue;
 
 		addr_idx = 0;
-		for (addr = find_first_bit(pnd->addrs, 64); addr < 64;
-			addr = find_next_bit(pnd->addrs, 64, 1+addr)) {
+		for_each_set_bit(addr, pnd->addrs, 64) {
 			if (addr_idx++ < addr_start_idx)
 				continue;