[PATCH v2] xen/platform-pci: add missing free_irq() in error path

[ruanjinjie <ruanjinjie@huawei.com>]

free_irq() is missing in case of error in platform_pci_probe(), fix that.

Signed-off-by: ruanjinjie <ruanjinjie@huawei.com>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
---
v2:
- improve the subject to describe which subsystem it targets.
---
 drivers/xen/platform-pci.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/platform-pci.c b/drivers/xen/platform-pci.c
index 18f0ed8b1f93..6ebd819338ec 100644
--- a/drivers/xen/platform-pci.c
+++ b/drivers/xen/platform-pci.c
@@ -144,7 +144,7 @@ static int platform_pci_probe(struct pci_dev *pdev,
 		if (ret) {
 			dev_warn(&pdev->dev, "Unable to set the evtchn callback "
 					 "err=%d\n", ret);
-			goto out;
+			goto irq_out;
 		}
 	}
 
@@ -152,13 +152,16 @@ static int platform_pci_probe(struct pci_dev *pdev,
 	grant_frames = alloc_xen_mmio(PAGE_SIZE * max_nr_gframes);
 	ret = gnttab_setup_auto_xlat_frames(grant_frames);
 	if (ret)
-		goto out;
+		goto irq_out;
 	ret = gnttab_init();
 	if (ret)
 		goto grant_out;
 	return 0;
 grant_out:
 	gnttab_free_auto_xlat_frames();
+irq_out:
+	if (!xen_have_vector_callback)
+		free_irq(pdev->irq, pdev);
 out:
 	pci_release_region(pdev, 0);
 mem_out:
-- 
2.25.1