Merge branch 'bugfix/fix_iperf_example_crash_issue' into 'master'

example: Scan failure should not cause system crash

Closes WIFI-3306

See merge request espressif/esp-idf!11998

examples/bluetooth/esp_ble_mesh/ble_mesh_wifi_coexist/components/iperf/cmd_wifi.c

@@ -194,7 +194,7 @@ static bool wifi_cmd_sta_scan(const char *ssid)
     scan_config.ssid = (uint8_t *) ssid;
 
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
-    ESP_ERROR_CHECK( esp_wifi_scan_start(&scan_config, false) );
+    esp_wifi_scan_start(&scan_config, false);
 
     return true;
 }