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

devm_regulator_get_enable_optional() function returns 0 on success, so
use it for the check if function succeeded instead of the -ENODEV value.

Fixes: 429e870636 ("drm/meson: dw-hdmi: Use devm_regulator_*get_enable*()")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
[narmstrong: s/succeeded/succeeded/ in commit message]
Link: https://patchwork.freedesktop.org/patch/msgid/20230109220033.31202-1-m.szyprowski@samsung.com

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 != -ENODEV)
+	if (ret < 0)
 		return ret;
 
 	meson_dw_hdmi->hdmitx_apb = devm_reset_control_get_exclusive(dev,