hsa: echo client crash when it fails to connect to remote

When echo client fails to connect to remote, it should quit.

Type: fix

Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: I787423bdc61a58eea48bab7bd8b73137626c02b4
diff --git a/src/plugins/hs_apps/echo_client.c b/src/plugins/hs_apps/echo_client.c
index b7bc85b..935e016 100644
--- a/src/plugins/hs_apps/echo_client.c
+++ b/src/plugins/hs_apps/echo_client.c
@@ -870,7 +870,7 @@
 
   vlib_worker_thread_barrier_release (vm);
 
-  if (ci < ecm->expected_connections)
+  if (ci < ecm->expected_connections && ecm->run_test != EC_EXITING)
     ec_program_connects ();
 
   return 0;