hwmon: (pwm-fan) Silence error on probe deferral

BugLink: https://bugs.launchpad.net/bugs/1853881

[ Upstream commit 9f67f758 ]

Probe deferrals aren't actual errors, so silence the error message in
case the PWM cannot yet be acquired.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Connor Kuehl <connor.kuehl@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

drivers/hwmon/pwm-fan.c

@@ -227,8 +227,12 @@ static int pwm_fan_probe(struct platform_device *pdev)
 
 	ctx->pwm = devm_of_pwm_get(&pdev->dev, pdev->dev.of_node, NULL);
 	if (IS_ERR(ctx->pwm)) {
-		dev_err(&pdev->dev, "Could not get PWM\n");
-		return PTR_ERR(ctx->pwm);
+		ret = PTR_ERR(ctx->pwm);
+
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Could not get PWM: %d\n", ret);
+
+		return ret;
 	}
 
 	platform_set_drvdata(pdev, ctx);