[PATCH AUTOSEL 6.14 04/54] wifi: ath12k: fix memory leak in ath12k_pci_remove()

[Sasha Levin <sashal@kernel.org>]

From: Miaoqing Pan <quic_miaoqing@quicinc.com>

[ Upstream commit 1b24394ed5c8a8d8f7b9e3aa9044c31495d46f2e ]

Kmemleak reported this error:

  unreferenced object 0xffff1c165cec3060 (size 32):
    comm "insmod", pid 560, jiffies 4296964570 (age 235.596s)
    backtrace:
      [<000000005434db68>] __kmem_cache_alloc_node+0x1f4/0x2c0
      [<000000001203b155>] kmalloc_trace+0x40/0x88
      [<0000000028adc9c8>] _request_firmware+0xb8/0x608
      [<00000000cad1aef7>] firmware_request_nowarn+0x50/0x80
      [<000000005011a682>] local_pci_probe+0x48/0xd0
      [<00000000077cd295>] pci_device_probe+0xb4/0x200
      [<0000000087184c94>] really_probe+0x150/0x2c0

The firmware memory was allocated in ath12k_pci_probe(), but not
freed in ath12k_pci_remove() in case ATH12K_FLAG_QMI_FAIL bit is
set. So call ath12k_fw_unmap() to free the memory.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.2.0-02280-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1

Signed-off-by: Miaoqing Pan <quic_miaoqing@quicinc.com>
Reviewed-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Link: https://patch.msgid.link/20250123080226.1116479-1-quic_miaoqing@quicinc.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/ath12k/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c
index 06cff3849ab8d..ee61afe564b92 100644
--- a/drivers/net/wireless/ath/ath12k/pci.c
+++ b/drivers/net/wireless/ath/ath12k/pci.c
@@ -1734,9 +1734,9 @@ static void ath12k_pci_remove(struct pci_dev *pdev)
 	cancel_work_sync(&ab->reset_work);
 	cancel_work_sync(&ab->dump_work);
 	ath12k_core_deinit(ab);
-	ath12k_fw_unmap(ab);
 
 qmi_fail:
+	ath12k_fw_unmap(ab);
 	ath12k_mhi_unregister(ab_pci);
 
 	ath12k_pci_free_irq(ab);
-- 
2.39.5