drm/meson: dw-hdmi: Fix devm_regulator_*get_enable*() conversion again

devm_regulator_get_enable_optional() returns -ENODEV if requested
optional regulator is not present. Adjust code for that, because in the
67d0a30 I've incorrectly assumed that it also returns 0 when
regulator is not present.

Reported-by: Ricardo Cañuelo <[email protected]>
Fixes: 67d0a30 ("drm/meson: dw-hdmi: Fix devm_regulator_*get_enable*() conversion")
Signed-off-by: Marek Szyprowski <[email protected]>
Acked-by: Martin Blumenstingl <[email protected]>
Acked-by: Neil Armstrong <[email protected]>
Signed-off-by: Neil Armstrong <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: mszyprow

drivers/gpu/drm/meson/meson_dw_hdmi.c

@@ -718,7 +718,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
 	dw_plat_data = &meson_dw_hdmi->dw_plat_data;
 
 	ret = devm_regulator_get_enable_optional(dev, "hdmi");
-	if (ret < 0)
+	if (ret < 0 && ret != -ENODEV)
 		return ret;
 
 	meson_dw_hdmi->hdmitx_apb = devm_reset_control_get_exclusive(dev,