[PCMCIA MTD] Fix leak and crash on reboot

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

drivers/mtd/maps/pcmciamtd.c

@@ -713,6 +713,7 @@ static void pcmciamtd_detach(struct pcmcia_device *link)
 
 	if(dev->mtd_info) {
 		del_mtd_device(dev->mtd_info);
+		map_destroy(dev->mtd_info);
 		info("mtd%d: Removed", dev->mtd_info->index);
 	}