ath10k: release pre_cal_file while unloading driver

Failing to release pre_cal_file caldata on deinit causes memory leak.

Fixes: b131129d9657 ("ath10k: fix calibration init sequence of qca99x0")
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/core.c

@@ -686,6 +686,9 @@ static void ath10k_core_free_firmware_files(struct ath10k *ar)
 	if (!IS_ERR(ar->cal_file))
 		release_firmware(ar->cal_file);
 
+	if (!IS_ERR(ar->pre_cal_file))
+		release_firmware(ar->pre_cal_file);
+
 	ath10k_swap_code_seg_release(ar);
 
 	ar->normal_mode_fw.fw_file.otp_data = NULL;
@@ -696,6 +699,7 @@ static void ath10k_core_free_firmware_files(struct ath10k *ar)
 	ar->normal_mode_fw.fw_file.firmware_len = 0;
 
 	ar->cal_file = NULL;
+	ar->pre_cal_file = NULL;
 }
 
 static int ath10k_fetch_cal_file(struct ath10k *ar)