mtd: Blackfin NFC: fix invalid free in remove()

Since info->mtd isn't dynamically allocated, we shouldn't attempt to
kfree() it.  Otherwise we get random fun corruption when unloading
the driver built as a module.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/bf5xx_nand.c

@@ -682,7 +682,6 @@ static int __devinit bf5xx_nand_add_partition(struct bf5xx_nand_info *info)
 static int __devexit bf5xx_nand_remove(struct platform_device *pdev)
 {
 	struct bf5xx_nand_info *info = to_nand_info(pdev);
-	struct mtd_info *mtd = NULL;
 
 	platform_set_drvdata(pdev, NULL);
 
@@ -690,11 +689,7 @@ static int __devexit bf5xx_nand_remove(struct platform_device *pdev)
 	 * and their partitions, then go through freeing the
 	 * resources used
 	 */
-	mtd = &info->mtd;
-	if (mtd) {
-		nand_release(mtd);
-		kfree(mtd);
-	}
+	nand_release(&info->mtd);
 
 	peripheral_free_list(bfin_nfc_pin_req);
 	bf5xx_nand_dma_remove(info);