[nrf noup] zephyr: Fix memory leak

nrf-squash! [nrf noup] zephyr: wifi: MBO Pre-certification bugfixes

Free the MLME buffer once it's sent.

Fixes SHEL-2738.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>

src/drivers/driver_zephyr.c

@@ -1603,9 +1603,16 @@ static int wpa_drv_zep_send_action(void *priv, unsigned int freq,
  os_memcpy(hdr->addr3, bssid, ETH_ALEN);
 
 
- return dev_ops->send_mlme(if_ctx->dev_priv, buf, 24 + data_len,
+ ret = dev_ops->send_mlme(if_ctx->dev_priv, buf, 24 + data_len,
  0, freq, no_cck, 1,
  wait_time, 0);
+ if (ret) {
+ wpa_printf(MSG_ERROR, "wpa_supp: Failed to send Action frame: %d", ret);
+ }
+
+ os_free(buf);
+
+ return ret;
 }
 
 static int nl80211_get_ext_capab(void *priv, enum wpa_driver_if_type type,