[PATCH 2/5] powerpc/83xx: fix possible object reference leak

[Wen Yang]

The call to of_find_node_by_name returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./arch/powerpc/platforms/83xx/km83xx.c:68:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 59, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@xxxxxxxxxx>
Cc: Scott Wood <oss@xxxxxxxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 arch/powerpc/platforms/83xx/km83xx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/platforms/83xx/km83xx.c b/arch/powerpc/platforms/83xx/km83xx.c
index d8642a4..11eea7c 100644
--- a/arch/powerpc/platforms/83xx/km83xx.c
+++ b/arch/powerpc/platforms/83xx/km83xx.c
@@ -65,6 +65,7 @@ static void quirk_mpc8360e_qe_enet10(void)
 	ret = of_address_to_resource(np_par, 0, &res);
 	if (ret) {
 		pr_warn("%s couldn;t map par_io registers\n", __func__);
+		of_node_put(np_par);
 		return;
 	}
 
-- 
2.9.5