usb: misc: onboard_usb_hub: Disable the USB hub clock on failure

In case regulator_bulk_enable() fails, the previously enabled USB hub
clock should be disabled.

Fix it accordingly.

Fixes: 65e62b8a ("usb: misc: onboard_usb_hub: Add support for clock input")
Cc: stable <stable@kernel.org>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20240409162910.2061640-1-festevam@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/misc/onboard_usb_hub.c

@@ -78,7 +78,7 @@ static int onboard_hub_power_on(struct onboard_hub *hub)
 	err = regulator_bulk_enable(hub->pdata->num_supplies, hub->supplies);
 	if (err) {
 		dev_err(hub->dev, "failed to enable supplies: %pe\n", ERR_PTR(err));
-		return err;
+		goto disable_clk;
 	}
 
 	fsleep(hub->pdata->reset_us);
@@ -87,6 +87,10 @@ static int onboard_hub_power_on(struct onboard_hub *hub)
 	hub->is_powered_on = true;
 
 	return 0;
+
+disable_clk:
+	clk_disable_unprepare(hub->clk);
+	return err;
 }
 
 static int onboard_hub_power_off(struct onboard_hub *hub)