PCI: faraday: Add missing of_node_put()

[ Upstream commit 3dc6ddfedc2818eaaa36842fbb049191e0c5e50f ]

The call to of_get_next_child() returns a node pointer with refcount
incremented thus it must be explicitly decremented here in the error
path and after the last usage.

Fixes: d3c68e0a7e34 ("PCI: faraday: Add Faraday Technology FTPCI100 PCI Host Bridge driver")
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/pci/host/pci-ftpci100.c b/drivers/pci/host/pci-ftpci100.c
index 4ea7d2ebcc5cd4ed4e3702947152c72054a06efe..4e6b219315142b67e05200fd8f5f250f112b9586 100644 (file)
--- a/drivers/pci/host/pci-ftpci100.c
+++ b/drivers/pci/host/pci-ftpci100.c
@@ -353,11 +353,13 @@ static int faraday_pci_setup_cascaded_irq(struct faraday_pci *p)
        irq = of_irq_get(intc, 0);
        if (irq <= 0) {
                dev_err(p->dev, "failed to get parent IRQ\n");
+               of_node_put(intc);
                return irq ?: -EINVAL;
        }
 
        p->irqdomain = irq_domain_add_linear(intc, PCI_NUM_INTX,
                                             &faraday_pci_irqdomain_ops, p);
+       of_node_put(intc);
        if (!p->irqdomain) {
                dev_err(p->dev, "failed to create Gemini PCI IRQ domain\n");
                return -EINVAL;