[PATCH -next] drm/rcar-du: Fix return value check in rcar_du_cmm_init()

[Geert Uytterhoeven]

On Tue, Apr 28, 2020 at 4:16 PM Wei Yongjun <weiyongjun1 at huawei.com> wrote:
> In case of error, the function of_parse_phandle()/of_find_device_by_node()
> returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value
> check should be replaced with NULL test
>
> Fixes: 8de707aeb452 ("drm: rcar-du: kms: Initialize CMM instances")
> Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas at glider.be>

Gr{oetje,eeting}s,

                        Geert


--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds