net/handshake: Fix section mismatch in handshake_exit

If CONFIG_NET_NS=n (e.g. m68k/defconfig):

    WARNING: modpost: vmlinux.o: section mismatch in reference: handshake_exit (section: .exit.text) -> handshake_genl_net_ops (section: .init.data)
    ERROR: modpost: Section mismatches detected.

Fix this by dropping the __net_initdata tag from handshake_genl_net_ops.

Fixes: 3b3009ea ("net/handshake: Create a NETLINK service for handling handshake requests")
Reported-by: noreply@ellerman.id.au
Closes: http://kisskb.ellerman.id.au/kisskb/buildresult/14912987Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://lore.kernel.org/r/20230420173723.3773434-1-geert@linux-m68k.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/handshake/netlink.c

@@ -249,7 +249,7 @@ static void __net_exit handshake_net_exit(struct net *net)
 	}
 }
 
-static struct pernet_operations __net_initdata handshake_genl_net_ops = {
+static struct pernet_operations handshake_genl_net_ops = {
 	.init		= handshake_net_init,
 	.exit		= handshake_net_exit,
 	.id		= &handshake_net_id,