[PATCH] EDAC/ie31200: Disable PCI device when probing fails

[Myeonghun Pak <mhun512@gmail.com>]

ie31200_init_one() enables the PCI device before calling ie31200_probe1().
If probing fails, it returns without balancing the successful enable,
leaving the PCI enable count elevated.

Call pci_disable_device() on that failure path. This also covers the
direct ie31200_init_one() call from the module initialization fallback,
while preserving the existing return values and successful probe path.

This issue was identified during our ongoing static-analysis research while
reviewing kernel code.

Assisted-by: OpenAI:GPT-5.6
Co-developed-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
---
 drivers/edac/ie31200_edac.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/ie31200_edac.c b/drivers/edac/ie31200_edac.c
index 6f5fdf43e7732cd23d54dc8392caed4ca7990fcd..88af77ee07fe367f692a89dd55f188aefe912e44 100644
--- a/drivers/edac/ie31200_edac.c
+++ b/drivers/edac/ie31200_edac.c
@@ -660,7 +660,9 @@ static int ie31200_init_one(struct pci_dev *pdev,
 	if (pci_enable_device(pdev) < 0)
 		return -EIO;
 	rc = ie31200_probe1(pdev, (struct res_config *)ent->driver_data);
-	if (rc == 0 && !mci_pdev)
+	if (rc)
+		pci_disable_device(pdev);
+	else if (!mci_pdev)
 		mci_pdev = pci_dev_get(pdev);
 
 	return rc;