[PATCH] powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address

[Miaoqian Lin]

of_get_next_parent() returns a node pointer with refcount incremented,
we should use of_node_put() on it when not need anymore.
Add missing of_node_put() in the error path to avoid refcount leak.

Fixes: ce21b3c9648a ("[CELL] add support for MSI on Axon-based Cell systems")
Signed-off-by: Miaoqian Lin <linmq...@gmail.com>
---
 arch/powerpc/platforms/cell/axon_msi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/platforms/cell/axon_msi.c 
b/arch/powerpc/platforms/cell/axon_msi.c
index f3291e957a19..5b012abca773 100644
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -223,6 +223,7 @@ static int setup_msi_msg_address(struct pci_dev *dev, 
struct msi_msg *msg)
        if (!prop) {
                dev_dbg(&dev->dev,
                        "axon_msi: no msi-address-(32|64) properties found\n");
+               of_node_put(dn);
                return -ENOENT;
        }
 
-- 
2.25.1