[PATCH] arm/xen: Fix refcount leak in xen_dt_guest_init

[Miaoqian Lin <linmq006@xxxxxxxxx>]

The of_find_compatible_node() function returns a node pointer with
refcount incremented, We should use of_node_put() on it when done
Add the missing of_node_put() to release the refcount.

Fixes: 9b08aaa3199a ("ARM: XEN: Move xen_early_init() before efi_init()")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
---
 arch/arm/xen/enlighten.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index ec5b082f3de6..262f45f686b6 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -424,6 +424,7 @@ static void __init xen_dt_guest_init(void)
 
        if (of_address_to_resource(xen_node, GRANT_TABLE_INDEX, &res)) {
                pr_err("Xen grant table region is not found\n");
+               of_node_put(xen_node);
                return;
        }
        xen_grant_frames = res.start;
-- 
2.17.1