USB: Memory leak in drivers/usb/serial/airprime.c

the commit
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5dda171202f94127e49c12daf780cdae1b4e668b
added a memory leak.  In case we cant allocate an urb, we dont free the
buffer and leak it.  Coverity id #1438

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Acked-by: Andy Gay <andy@andynet.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/serial/airprime.c

@@ -134,6 +134,7 @@ static int airprime_open(struct usb_serial_port *port, struct file *filp)
 		}
 		urb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!urb) {
+			kfree(buffer);
 			dev_err(&port->dev, "%s - no more urbs?\n",
 				__FUNCTION__);
 			result = -ENOMEM;