PTR_ERR_OR_ZERO simplifies the code.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>