[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 <linmq006 at 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