serial: 8250_lpc18xx: disable clks on error in probe()

Goto the clean up path to clean up a couple clocks before returning
on this error path.

Fixes: 0087b9e ("serial: 8250_lpc18xx: Switch to use uart_read_port_properties()")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/92646c10-e0b5-4117-a9ac-ce9987d33ce3@moroto.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Dan Carpenter

drivers/tty/serial/8250/8250_lpc18xx.c

@@ -151,7 +151,7 @@ static int lpc18xx_serial_probe(struct platform_device *pdev)
 
 	ret = uart_read_port_properties(&uart.port);
 	if (ret)
-		return ret;
+		goto dis_uart_clk;
 
 	uart.port.iotype = UPIO_MEM32;
 	uart.port.regshift = 2;