serial: vt8500: fix possible memory leak in vt8500_serial_probe()

vt8500_port is malloced in vt8500_serial_probe() and should be freed
before leaving from the error handling cases, otherwise it will
cause memory leak.
Fix it by move the allocation of vt8500_port after those test.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index 205d4cf4a063..4354fe565f64 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -567,10 +567,6 @@ static int __devinit vt8500_serial_probe(struct platform_device *pdev)
         if (!mmres || !irqres)
                 return -ENODEV;
 
-        vt8500_port = kzalloc(sizeof(struct vt8500_port), GFP_KERNEL);
-        if (!vt8500_port)
-                return -ENOMEM;
-
         if (np)
                 port = of_alias_get_id(np, "serial");
                 if (port > VT8500_MAX_PORTS)
@@ -593,6 +589,10 @@ static int __devinit vt8500_serial_probe(struct platform_device *pdev)
                 return -EBUSY;
         }
 
+        vt8500_port = kzalloc(sizeof(struct vt8500_port), GFP_KERNEL);
+        if (!vt8500_port)
+                return -ENOMEM;
+
         vt8500_port->uart.type = PORT_VT8500;
         vt8500_port->uart.iotype = UPIO_MEM;
         vt8500_port->uart.mapbase = mmres->start;