[PATCH] sil24: add missing ata_pad_free()

sil24_port_stop() is missing call to ata_pad_free() thus leaking pad
buffer when a port is stopped.  This patch adds it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index d3198d9..55e744d 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -687,6 +687,7 @@
 	struct sil24_port_priv *pp = ap->private_data;
 
 	sil24_cblk_free(pp, dev);
+	ata_pad_free(ap, dev);
 	kfree(pp);
 }