[PATCH] serial: vt8500: Fix clock reference leak in vt8500_serial_probe()

[Wentao Liang]

of_clk_get() returns a clock with a reference that has to be released
with clk_put(). If clk_prepare_enable() fails the function returns
without doing so, leaking the reference.

Add the missing clk_put() on that error path.

Fixes: 12faa35ae5cb ("serial: vt8500: UART uses gated clock rather than 24Mhz reference")
Cc: stable at vger.kernel.org
Signed-off-by: Wentao Liang <vulab at iscas.ac.cn>
---
 drivers/tty/serial/vt8500_serial.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index 78a1c1eea11b..fc6fdc751b16 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -656,6 +656,7 @@ static int vt8500_serial_probe(struct platform_device *pdev)
 	ret = clk_prepare_enable(vt8500_port->clk);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to enable clock\n");
+		clk_put(vt8500_port->clk);
 		return ret;
 	}
 
-- 
2.34.1