From 8c386cc817878588195dde38e919aa6ba9409d58 Mon Sep 17 00:00:00 2001
From: Navid Emamdoost <navid.emamdoost@gmail.com>
Date: Mon, 25 Nov 2019 13:52:52 -0600
Subject: [PATCH] PCI/IOV: Fix memory leak in pci_iov_add_virtfn()
Git-commit: 8c386cc817878588195dde38e919aa6ba9409d58
Patch-mainline: v5.6-rc1
References: git-fixes

In the implementation of pci_iov_add_virtfn() the allocated virtfn is
leaked if pci_setup_device() fails. The error handling is not calling
pci_stop_and_remove_bus_device(). Change the goto label to failed2.

Fixes: 156c55325d30 ("PCI: Check for pci_setup_device() failure in pci_iov_add_virtfn()")
Link: https://lore.kernel.org/r/20191125195255.23740-1-navid.emamdoost@gmail.com
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/pci/iov.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index 1e88fd427757..4d1f392b05f9 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -186,10 +186,10 @@ int pci_iov_add_virtfn(struct pci_dev *dev, int id)
 	sprintf(buf, "virtfn%u", id);
 	rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf);
 	if (rc)
-		goto failed2;
+		goto failed1;
 	rc = sysfs_create_link(&virtfn->dev.kobj, &dev->dev.kobj, "physfn");
 	if (rc)
-		goto failed3;
+		goto failed2;
 
 	kobject_uevent(&virtfn->dev.kobj, KOBJ_CHANGE);
 
@@ -197,11 +197,10 @@ int pci_iov_add_virtfn(struct pci_dev *dev, int id)
 
 	return 0;
 
-failed3:
-	sysfs_remove_link(&dev->dev.kobj, buf);
 failed2:
-	pci_stop_and_remove_bus_device(virtfn);
+	sysfs_remove_link(&dev->dev.kobj, buf);
 failed1:
+	pci_stop_and_remove_bus_device(virtfn);
 	pci_dev_put(dev);
 failed0:
 	virtfn_remove_bus(dev->bus, bus);
-- 
2.16.4