serial: mcf: missing uart_unregister_driver() on error in mcf_init()

Add the missing uart_unregister_driver() before return
from mcf_init() in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c
index e956377..65be0c0 100644 (file)
--- a/drivers/tty/serial/mcf.c
+++ b/drivers/tty/serial/mcf.c
@@ -707,8 +707,10 @@ static int __init mcf_init(void)
        if (rc)
                return rc;
        rc = platform_driver_register(&mcf_platform_driver);
-       if (rc)
+       if (rc) {
+               uart_unregister_driver(&mcf_driver);
                return rc;
+       }
        return 0;
 }