net: xfrm: fix old-style declaration

Modern C standards expect the '__inline__' keyword to come before the return
type in a declaration, and we get a couple of warnings for this with "make W=1"
in the xfrm{4,6}_policy.c files:

net/ipv6/xfrm6_policy.c:369:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]
 static int inline xfrm6_net_sysctl_init(struct net *net)
net/ipv6/xfrm6_policy.c:374:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]
 static void inline xfrm6_net_sysctl_exit(struct net *net)
net/ipv4/xfrm4_policy.c:339:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]
 static int inline xfrm4_net_sysctl_init(struct net *net)
net/ipv4/xfrm4_policy.c:344:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]
 static void inline xfrm4_net_sysctl_exit(struct net *net)
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/xfrm4_policy.c

@@ -295,7 +295,7 @@ static struct ctl_table xfrm4_policy_table[] = {
 	{ }
 };
 
-static int __net_init xfrm4_net_sysctl_init(struct net *net)
+static __net_init int xfrm4_net_sysctl_init(struct net *net)
 {
 	struct ctl_table *table;
 	struct ctl_table_header *hdr;
@@ -323,7 +323,7 @@ static int __net_init xfrm4_net_sysctl_init(struct net *net)
 	return -ENOMEM;
 }
 
-static void __net_exit xfrm4_net_sysctl_exit(struct net *net)
+static __net_exit void xfrm4_net_sysctl_exit(struct net *net)
 {
 	struct ctl_table *table;
 
@@ -336,12 +336,12 @@ static void __net_exit xfrm4_net_sysctl_exit(struct net *net)
 		kfree(table);
 }
 #else /* CONFIG_SYSCTL */
-static int inline xfrm4_net_sysctl_init(struct net *net)
+static inline int xfrm4_net_sysctl_init(struct net *net)
 {
 	return 0;
 }
 
-static void inline xfrm4_net_sysctl_exit(struct net *net)
+static inline void xfrm4_net_sysctl_exit(struct net *net)
 {
 }
 #endif

net/ipv6/xfrm6_policy.c

@@ -366,12 +366,12 @@ static void __net_exit xfrm6_net_sysctl_exit(struct net *net)
 		kfree(table);
 }
 #else /* CONFIG_SYSCTL */
-static int inline xfrm6_net_sysctl_init(struct net *net)
+static inline int xfrm6_net_sysctl_init(struct net *net)
 {
 	return 0;
 }
 
-static void inline xfrm6_net_sysctl_exit(struct net *net)
+static inline void xfrm6_net_sysctl_exit(struct net *net)
 {
 }
 #endif