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>
diff --git a/drivers/input/misc/ab8500-ponkey.c b/drivers/input/misc/ab8500-ponkey.c
index 98f8ede..3d3288a 100644
--- a/drivers/input/misc/ab8500-ponkey.c
+++ b/drivers/input/misc/ab8500-ponkey.c
@@ -107,7 +107,7 @@
 	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: