ipv4: fix checkpatch errors

Fix checkpatch errors of the following type:
	* ERROR: "foo * bar" should be "foo *bar"
	* ERROR: "(foo*)" should be "(foo *)"

Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index e4d18f2..a13ce23 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2215,7 +2215,7 @@
 			    struct in_device *in_dev,
 			    __be32 daddr, __be32 saddr, u32 tos)
 {
-	struct rtable* rth = NULL;
+	struct rtable *rth = NULL;
 	int err;
 	unsigned hash;
 
@@ -2257,11 +2257,11 @@
 	struct flowi4	fl4;
 	unsigned	flags = 0;
 	u32		itag = 0;
-	struct rtable * rth;
+	struct rtable *rth;
 	unsigned	hash;
 	__be32		spec_dst;
 	int		err = -EINVAL;
-	struct net    * net = dev_net(dev);
+	struct net    *net = dev_net(dev);
 
 	/* IP on this device is disabled. */
 
@@ -2433,7 +2433,7 @@
 int ip_route_input_common(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 			   u8 tos, struct net_device *dev, bool noref)
 {
-	struct rtable * rth;
+	struct rtable *rth;
 	unsigned	hash;
 	int iif = dev->ifindex;
 	struct net *net;
@@ -3068,7 +3068,7 @@
 	return -EMSGSIZE;
 }
 
-static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg)
+static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void *arg)
 {
 	struct net *net = sock_net(in_skb->sk);
 	struct rtmsg *rtm;