[PATCH 3.18 16/39] usb: host: ehci-exynos: Decrese node refcount on exynos_ehci_get_phy() error paths

[Greg Kroah-Hartman]

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Krzysztof Kozlowski <k...@kernel.org>

commit 3f6026b1dcb3c8ee71198c485a72ac674c6890dd upstream.

Returning from for_each_available_child_of_node() loop requires cleaning
up node refcount.  Error paths lacked it so for example in case of
deferred probe, the refcount of phy node was left increased.

Fixes: 6d40500ac9b6 ("usb: ehci/ohci-exynos: Fix of_node_put() for child when 
getting PHYs")
Signed-off-by: Krzysztof Kozlowski <k...@kernel.org>
Acked-by: Alan Stern <st...@rowland.harvard.edu>
Reviewed-by: Javier Martinez Canillas <jav...@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/usb/host/ehci-exynos.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -78,10 +78,12 @@ static int exynos_ehci_get_phy(struct de
                if (IS_ERR(phy)) {
                        ret = PTR_ERR(phy);
                        if (ret == -EPROBE_DEFER) {
+                               of_node_put(child);
                                return ret;
                        } else if (ret != -ENOSYS && ret != -ENODEV) {
                                dev_err(dev,
                                        "Error retrieving usb2 phy: %d\n", ret);
+                               of_node_put(child);
                                return ret;
                        }
                }