Input: ab8500-ponkey - fix IRQ freeing in error path

Looks like an obvious typo to me.
Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/misc/ab8500-ponkey.c

@@ -107,7 +107,7 @@ static int __devinit ab8500_ponkey_probe(struct platform_device *pdev)
 	return 0;
 
 err_free_dbr_irq:
-	free_irq(ponkey->irq_dbf, ponkey);
+	free_irq(ponkey->irq_dbr, ponkey);
 err_free_dbf_irq:
 	free_irq(ponkey->irq_dbf, ponkey);
 err_free_mem: