net: phy: fixed_phy: fix use-after-free when checking link GPIO

net: phy: fixed_phy: fix use-after-free when checking link GPIO

[ Upstream commit d266f19f3ae7fbcaf92229639b78d2110ae44f33 ]

If we fail to locate GPIO for any reason other than deferral or
not-found-GPIO, we try to print device tree node info, however if might
be freed already as we called of_node_put() on it.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>