[IPV4] ROUTE: Convert rt_hash_lock_init() macro into function

There's no need in having this function exist in a form
of macro. Properly formatted function looks much better.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/route.c

@@ -235,16 +235,25 @@ struct rt_hash_bucket {
 
 static spinlock_t	*rt_hash_locks;
 # define rt_hash_lock_addr(slot) &rt_hash_locks[(slot) & (RT_HASH_LOCK_SZ - 1)]
-# define rt_hash_lock_init()	{ \
-		int i; \
-		rt_hash_locks = kmalloc(sizeof(spinlock_t) * RT_HASH_LOCK_SZ, GFP_KERNEL); \
-		if (!rt_hash_locks) panic("IP: failed to allocate rt_hash_locks\n"); \
-		for (i = 0; i < RT_HASH_LOCK_SZ; i++) \
-			spin_lock_init(&rt_hash_locks[i]); \
-		}
+
+static __init void rt_hash_lock_init(void)
+{
+	int i;
+
+	rt_hash_locks = kmalloc(sizeof(spinlock_t) * RT_HASH_LOCK_SZ,
+			GFP_KERNEL);
+	if (!rt_hash_locks)
+		panic("IP: failed to allocate rt_hash_locks\n");
+
+	for (i = 0; i < RT_HASH_LOCK_SZ; i++)
+		spin_lock_init(&rt_hash_locks[i]);
+}
 #else
 # define rt_hash_lock_addr(slot) NULL
-# define rt_hash_lock_init()
+
+static inline void rt_hash_lock_init(void)
+{
+}
 #endif
 
 static struct rt_hash_bucket 	*rt_hash_table;