net: fix returning void-valued expression warnings

drivers/net/8390.c:37:2: warning: returning void-valued expression
drivers/net/bnx2.c:1635:3: warning: returning void-valued expression
drivers/net/xen-netfront.c:1806:2: warning: returning void-valued expression
net/ipv4/tcp_hybla.c:105:3: warning: returning void-valued expression
net/ipv4/tcp_vegas.c:171:3: warning: returning void-valued expression
net/ipv4/tcp_veno.c:123:3: warning: returning void-valued expression
net/sysctl_net.c:85:2: warning: returning void-valued expression

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/8390.c

@@ -34,7 +34,7 @@ struct net_device *__alloc_ei_netdev(int size)
 
 void NS8390_init(struct net_device *dev, int startp)
 {
-	return __NS8390_init(dev, startp);
+	__NS8390_init(dev, startp);
 }
 
 EXPORT_SYMBOL(ei_open);

drivers/net/bnx2.c

@@ -1631,8 +1631,10 @@ bnx2_set_default_remote_link(struct bnx2 *bp)
 static void
 bnx2_set_default_link(struct bnx2 *bp)
 {
-	if (bp->phy_flags & BNX2_PHY_FLAG_REMOTE_PHY_CAP)
-		return bnx2_set_default_remote_link(bp);
+	if (bp->phy_flags & BNX2_PHY_FLAG_REMOTE_PHY_CAP) {
+		bnx2_set_default_remote_link(bp);
+		return;
+	}
 
 	bp->autoneg = AUTONEG_SPEED | AUTONEG_FLOW_CTRL;
 	bp->req_line_speed = 0;

drivers/net/xen-netfront.c

@@ -1803,7 +1803,7 @@ static void __exit netif_exit(void)
 	if (is_initial_xendomain())
 		return;
 
-	return xenbus_unregister_driver(&netfront);
+	xenbus_unregister_driver(&netfront);
 }
 module_exit(netif_exit);
 

net/ipv4/tcp_hybla.c

@@ -101,8 +101,10 @@ static void hybla_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 	if (!tcp_is_cwnd_limited(sk, in_flight))
 		return;
 
-	if (!ca->hybla_en)
-		return tcp_reno_cong_avoid(sk, ack, in_flight);
+	if (!ca->hybla_en) {
+		tcp_reno_cong_avoid(sk, ack, in_flight);
+		return;
+	}
 
 	if (ca->rho == 0)
 		hybla_recalc_param(sk);

net/ipv4/tcp_vegas.c

@@ -167,8 +167,10 @@ static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct vegas *vegas = inet_csk_ca(sk);
 
-	if (!vegas->doing_vegas_now)
-		return tcp_reno_cong_avoid(sk, ack, in_flight);
+	if (!vegas->doing_vegas_now) {
+		tcp_reno_cong_avoid(sk, ack, in_flight);
+		return;
+	}
 
 	/* The key players are v_beg_snd_una and v_beg_snd_nxt.
 	 *

net/ipv4/tcp_veno.c

@@ -119,8 +119,10 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct veno *veno = inet_csk_ca(sk);
 
-	if (!veno->doing_veno_now)
-		return tcp_reno_cong_avoid(sk, ack, in_flight);
+	if (!veno->doing_veno_now) {
+		tcp_reno_cong_avoid(sk, ack, in_flight);
+		return;
+	}
 
 	/* limited by applications */
 	if (!tcp_is_cwnd_limited(sk, in_flight))

net/sysctl_net.c

@@ -82,6 +82,6 @@ EXPORT_SYMBOL_GPL(register_net_sysctl_table);
 
 void unregister_net_sysctl_table(struct ctl_table_header *header)
 {
-	return unregister_sysctl_table(header);
+	unregister_sysctl_table(header);
 }
 EXPORT_SYMBOL_GPL(unregister_net_sysctl_table);