net: Monitor command set_link finds only VLAN clients, fix

Clients not associated with a VLAN exist since commit d80b9fc6.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/net.c b/net.c
index fb89f94..029b0d7 100644
--- a/net.c
+++ b/net.c
@@ -1243,6 +1243,7 @@
             }
         }
     }
+    vc = qemu_find_netdev(name);
 done:
 
     if (!vc) {