vppinfra: fix setns typo

Type: fix

Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
Change-Id: Ib8eb70336956bc2e8d0454f3c1f2c62ec98cb009
diff --git a/src/vppinfra/socket.c b/src/vppinfra/socket.c
index ef0eaae..b13675b 100644
--- a/src/vppinfra/socket.c
+++ b/src/vppinfra/socket.c
@@ -732,7 +732,7 @@
 #if CLIB_LINUX
   if (netns_fd != -1)
     {
-      setns (CLONE_NEWNET, netns_fd);
+      setns (netns_fd, CLONE_NEWNET);
       close (netns_fd);
     }
 #endif