[PATCH 4.10 071/129] usb: host: ehci-exynos: Decrese node refcount on exynos_ehci_get_phy() error paths

[Greg Kroah-Hartman]

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

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

From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>

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 <krzk@xxxxxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 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
@@ -77,10 +77,12 @@ 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;
 			}
 		}