usb: musb: host: compare status for negative error values

Variable d is a struct usb_iso_packet_descriptor. The status filed is usually
negative when an error happens.
Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/musb_host.c

@@ -1575,7 +1575,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
 			/* even if there was an error, we did the dma
 			 * for iso_frame_desc->length
 			 */
-			if (d->status != EILSEQ && d->status != -EOVERFLOW)
+			if (d->status != -EILSEQ && d->status != -EOVERFLOW)
 				d->status = 0;
 
 			if (++qh->iso_idx >= urb->number_of_packets)