fix(eth): Attach ETH events at the correct place (espressif#9658)

This is to ensure that stack events are called before ours, because callbacks are called in order of attaching

Author: me-no-dev

libraries/Ethernet/src/ETH.cpp

@@ -163,10 +163,6 @@ bool ETHClass::begin(eth_phy_type_t type, int32_t phy_addr, int mdc, int mdio, i
 
  Network.begin();
  _ethernets[_eth_index] = this;
- if (_eth_ev_instance == NULL && esp_event_handler_instance_register(ETH_EVENT, ESP_EVENT_ANY_ID, &_eth_event_cb, NULL, &_eth_ev_instance)) {
- log_e("event_handler_instance_register for ETH_EVENT Failed!");
- return false;
- }
 
  eth_esp32_emac_config_t mac_config = ETH_ESP32_EMAC_DEFAULT_CONFIG();
  mac_config.clock_config.rmii.clock_mode = (clock_mode) ? EMAC_CLK_OUT : EMAC_CLK_EXT_IN;
@@ -286,6 +282,11 @@ bool ETHClass::begin(eth_phy_type_t type, int32_t phy_addr, int mdc, int mdio, i
  return false;
  }
 
+ if (_eth_ev_instance == NULL && esp_event_handler_instance_register(ETH_EVENT, ESP_EVENT_ANY_ID, &_eth_event_cb, NULL, &_eth_ev_instance)) {
+ log_e("event_handler_instance_register for ETH_EVENT Failed!");
+ return false;
+ }
+
  /* attach to receive events */
  initNetif((Network_Interface_ID)(ESP_NETIF_ID_ETH + _eth_index));
 
@@ -550,10 +551,6 @@ bool ETHClass::beginSPI(
 
  Network.begin();
  _ethernets[_eth_index] = this;
- if (_eth_ev_instance == NULL && esp_event_handler_instance_register(ETH_EVENT, ESP_EVENT_ANY_ID, &_eth_event_cb, NULL, &_eth_ev_instance)) {
- log_e("event_handler_instance_register for ETH_EVENT Failed!");
- return false;
- }
 
  // Install GPIO ISR handler to be able to service SPI Eth modules interrupts
  ret = gpio_install_isr_service(0);
@@ -717,6 +714,11 @@ bool ETHClass::beginSPI(
  return false;
  }
 
+ if (_eth_ev_instance == NULL && esp_event_handler_instance_register(ETH_EVENT, ESP_EVENT_ANY_ID, &_eth_event_cb, NULL, &_eth_ev_instance)) {
+ log_e("event_handler_instance_register for ETH_EVENT Failed!");
+ return false;
+ }
+
  /* attach to receive events */
  initNetif((Network_Interface_ID)(ESP_NETIF_ID_ETH + _eth_index));