tun: Fix potential unpaired call to osmo_netns_switch_exit()
Fixes: Coverity CID#307429
Change-Id: Iadfc9eb48c6342433eee8da3e4d00ee496df3c75
diff --git a/src/core/tun.c b/src/core/tun.c
index 7f61183..4c9dec1 100644
--- a/src/core/tun.c
+++ b/src/core/tun.c
@@ -407,7 +407,8 @@
close(tundev->wqueue.bfd.fd);
tundev->wqueue.bfd.fd = -1;
err_restore_ns:
- osmo_netns_switch_exit(&switch_state);
+ if (tundev->netns_name)
+ osmo_netns_switch_exit(&switch_state);
err_close_netns_fd:
if (netns_fd >= 0)
close(netns_fd);