Bug fix in wifi_hidl_test_utils

Bug: 142397658
Test: atest VtsHalWifiSupplicantV1_0TargetTest
Change-Id: Idc1560fa83471f79a2302746815117ff60c46c77
diff --git a/wifi/1.0/vts/functional/wifi_hidl_test_utils.cpp b/wifi/1.0/vts/functional/wifi_hidl_test_utils.cpp
index f89f7b4..0e576e7 100644
--- a/wifi/1.0/vts/functional/wifi_hidl_test_utils.cpp
+++ b/wifi/1.0/vts/functional/wifi_hidl_test_utils.cpp
@@ -196,7 +196,7 @@
     if (!wifi_chip.get()) {
         return nullptr;
     }
-    sp<IWifiStaIface> wifi_sta_iface = getWifiStaIface();
+    sp<IWifiStaIface> wifi_sta_iface = getWifiStaIface(instance_name);
     if (!wifi_sta_iface.get()) {
         return nullptr;
     }