tests: Force concurrent exchange in ap_wps_er_multi_add_enrollee

This makes it more likely for the two ERs to go through WPS UPnP
exchange in parallel. This was already happening every now and then and
resulted in failures. However, now that there is support for multiple
concurrent exchanges, it is useful to have this test case hit that
possibility more frequently.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

tests/hwsim/test_ap_wps.py

@@ -1216,13 +1216,16 @@ def _test_ap_wps_er_multi_add_enrollee(dev, apdev):
     for i in range(2):
         dev[i].scan_for_bss(apdev[0]['bssid'], freq=2412)
         dev[i].wps_reg(apdev[0]['bssid'], ap_pin)
+    for i in range(2):
         dev[i].request("WPS_ER_START ifname=lo")
     for i in range(2):
         ev = dev[i].wait_event(["WPS-ER-AP-ADD"], timeout=15)
         if ev is None:
             raise Exception("AP discovery timed out")
         dev[i].dump_monitor()
+    for i in range(2):
         dev[i].request("WPS_ER_LEARN " + ap_uuid + " " + ap_pin)
+    for i in range(2):
         ev = dev[i].wait_event(["WPS-ER-AP-SETTINGS"], timeout=15)
         if ev is None:
             raise Exception("AP learn timed out")