regulator: core: do not report EPROBE_DEFER as error but as debug

Temporary failures to get a regulator (EPROBE_DEFER) should be logged
as debug information instead of errors.

Signed-off-by: Jorge Ramirez-Ortiz <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/core.c

···
 						      consumers[i].supply);
 		if (IS_ERR(consumers[i].consumer)) {
 			ret = PTR_ERR(consumers[i].consumer);
-			dev_err(dev, "Failed to get supply '%s': %d\n",
-				consumers[i].supply, ret);
 			consumers[i].consumer = NULL;
 			goto err;
 		}
···
 	return 0;
 
 err:
+	if (ret != -EPROBE_DEFER)
+		dev_err(dev, "Failed to get supply '%s': %d\n",
+			consumers[i].supply, ret);
+	else
+		dev_dbg(dev, "Failed to get supply '%s', deferring\n",
+			consumers[i].supply);
+
 	while (--i >= 0)
 		regulator_put(consumers[i].consumer);