regulator: Handle deferred clk

devm_clk_get() can return -EPROBE_DEFER. So it is better to return the
error code from devm_clk_get(), instead of a hard coded -ENOENT.

This gives more opportunities to successfully probe the driver.

Fixes: 8959e532 ("regulator: fixed: add possibility to enable by clock")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/18459fae3d017a66313699c7c8456b28158b2dd0.1679819354.git.christophe.jaillet@wanadoo.frSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/fixed.c

@@ -215,7 +215,7 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev)
 		drvdata->enable_clock = devm_clk_get(dev, NULL);
 		if (IS_ERR(drvdata->enable_clock)) {
 			dev_err(dev, "Can't get enable-clock from devicetree\n");
-			return -ENOENT;
+			return PTR_ERR(drvdata->enable_clock);
 		}
 	} else if (drvtype && drvtype->has_performance_state) {
 		drvdata->desc.ops = &fixed_voltage_domain_ops;