usb: renesas_usbhs: fix the sequence in xfer_work()

commit 9b53d9af upstream.

This patch fixes the setup sequence in xfer_work(). Otherwise,
sometimes a usb transaction will get stuck.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

drivers/usb/renesas_usbhs/fifo.c

@@ -806,10 +806,10 @@ static void xfer_work(struct work_struct *work)
 	dev_dbg(dev, "  %s %d (%d/ %d)\n",
 		fifo->name, usbhs_pipe_number(pipe), pkt->length, pkt->zero);
 
-	usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->trans);
-	usbhs_pipe_enable(pipe);
 	usbhsf_dma_start(pipe, fifo);
+	usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->trans);
 	dma_async_issue_pending(chan);
+	usbhs_pipe_enable(pipe);
 }
 
 /*