drm/tegra: sor: Don't warn on probe deferral

Deferred probe is an expected return value for tegra_output_probe().
Given that the driver deals with it properly, there's no need to output
a warning that may potentially confuse users.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

drivers/gpu/drm/tegra/sor.c

@@ -3764,10 +3764,9 @@ static int tegra_sor_probe(struct platform_device *pdev)
 		return err;
 
 	err = tegra_output_probe(&sor->output);
-	if (err < 0) {
-		dev_err(&pdev->dev, "failed to probe output: %d\n", err);
-		return err;
-	}
+	if (err < 0)
+		return dev_err_probe(&pdev->dev, err,
+				     "failed to probe output\n");
 
 	if (sor->ops && sor->ops->probe) {
 		err = sor->ops->probe(sor);