The netdev Windows construct uses query_netdev to see if a port exists
in the datapath, in the case an error occurred in the reply message
we returned 0, meaning netdev_open was successful.

This patch fixes fixes that problem.

Reported-at: https://github.com/openvswitch/ovs-issues/issues/125
Reported-by: Shashank Ram <[email protected]>
Signed-off-by: Alin Gabriel Serdean <[email protected]>
---
intended for: branch-2.5, branch-2.6, branch-2.7, master
---
 lib/netdev-windows.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/netdev-windows.c b/lib/netdev-windows.c
index c2fbe42..b22bd09 100644
--- a/lib/netdev-windows.c
+++ b/lib/netdev-windows.c
@@ -295,7 +295,7 @@ query_netdev(const char *devname,
         }
     }
 
-    return 0;
+    return error;
 }
 
 static void
-- 
2.10.2.windows.1
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