memory: brcmstb_dpfe: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and the error value gets printed.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Markus Mayer <mmayer@broadcom.com>
Link: https://lore.kernel.org/r/20200828153747.22358-1-krzk@kernel.org

drivers/memory/brcmstb_dpfe.c

@@ -901,11 +901,8 @@ static int brcmstb_dpfe_probe(struct platform_device *pdev)
 	}
 
 	ret = brcmstb_dpfe_download_firmware(priv);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "Couldn't download firmware -- %d\n", ret);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "Couldn't download firmware\n");
 
 	ret = sysfs_create_groups(&pdev->dev.kobj, priv->dpfe_api->sysfs_attrs);
 	if (!ret)