mmc: sdhci-of-arasan: 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>
Link: https://lore.kernel.org/r/20200902193658.20539-8-krzk@kernel.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-of-arasan.c

@@ -1543,10 +1543,9 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 		of_node_put(node);
 
 		if (IS_ERR(sdhci_arasan->soc_ctl_base)) {
-			ret = PTR_ERR(sdhci_arasan->soc_ctl_base);
-			if (ret != -EPROBE_DEFER)
-				dev_err(&pdev->dev, "Can't get syscon: %d\n",
-					ret);
+			ret = dev_err_probe(&pdev->dev,
+					    PTR_ERR(sdhci_arasan->soc_ctl_base),
+					    "Can't get syscon\n");
 			goto err_pltfm_free;
 		}
 	}