tests: Make autogo_join_auto_go_neg more robust

This test cases used to fail if dev1 had seen dev0 as a GO in an earlier
test case, e.g., when running it after autogo_fail. Fix this by clearing
scan results on dev1 at the beginning of the test case.

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

tests/hwsim/test_p2p_autogo.py

@@ -538,6 +538,7 @@ def test_autogo_join_auto(dev):
 
 def test_autogo_join_auto_go_neg(dev):
     """P2P_CONNECT-auto fallback to GO Neg"""
+    dev[1].flush_scan_cache()
     dev[0].p2p_listen()
     addr = dev[0].p2p_dev_addr()
     if "OK" not in dev[1].global_request("P2P_CONNECT " + addr + " pbc auto"):