rtc/m48t59: redundant condition judgement

It is safe to deallocate a NULL pointer. so 'if (m48t59)' is redundant condition judgement, so I remove it.

---
 drivers/rtc/rtc-m48t59.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

index be8359f..0b66455 100644
@@ -506,7 +506,6 @@ out:
 		free_irq(m48t59->irq, &pdev->dev);
 	if (m48t59->ioaddr)
 		iounmap(m48t59->ioaddr);
-	if (m48t59)
 		kfree(m48t59);
 	return ret;
 }

1.6.3.3