[PATCH] PCI/AER: Fix device reference leak in aer_inject()

[Aadityarangan Shridhar Iyengar <adiyenga@cisco.com>]

In aer_inject(), pcie_port_find_device() returns a device with an
incremented reference count. The function returns this device but never
calls put_device() to release the reference, resulting in a reference leak.

Fix this by calling put_device() after using the device in both the success
and error paths.

Fixes: 0e98db259fd8 ("PCI/AER: Reuse existing pcie_port_find_device() interface")
Signed-off-by: Aadityarangan Shridhar Iyengar <adiyenga@cisco.com>
---
 drivers/pci/pcie/aer_inject.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/pcie/aer_inject.c b/drivers/pci/pcie/aer_inject.c
index 09bfc7194ef3..5025843157b1 100644
--- a/drivers/pci/pcie/aer_inject.c
+++ b/drivers/pci/pcie/aer_inject.c
@@ -467,11 +467,13 @@ static int aer_inject(struct aer_error_inj *einj)
 		if (!get_service_data(edev)) {
 			pci_warn(edev->port, "AER service is not initialized\n");
 			ret = -EPROTONOSUPPORT;
+			put_device(device);
 			goto out_put;
 		}
 		pci_info(edev->port, "Injecting errors %08x/%08x into device %s\n",
 			 einj->cor_status, einj->uncor_status, pci_name(dev));
 		ret = irq_inject_interrupt(edev->irq);
+		put_device(device);
 	} else {
 		pci_err(rpdev, "AER device not found\n");
 		ret = -ENODEV;
-- 
2.35.6