drm/msm/hdmi: silence -EPROBE_DEFER warning

Silence a warning message due to an -EPROBE_DEFER error to help cleanup
the system boot log.

Signed-off-by: Brian Masney <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Signed-off-by: Rob Clark <[e-mail]>

drivers/gpu/drm/msm/hdmi/hdmi_phy.c

···
 		reg = devm_regulator_get(dev, cfg->reg_names[i]);
 		if (IS_ERR(reg)) {
 			ret = PTR_ERR(reg);
-			DRM_DEV_ERROR(dev, "failed to get phy regulator: %s (%d)\n",
-				cfg->reg_names[i], ret);
+			if (ret != -EPROBE_DEFER) {
+				DRM_DEV_ERROR(dev,
+					      "failed to get phy regulator: %s (%d)\n",
+					      cfg->reg_names[i], ret);
+			}
+
 			return ret;
 		}