usb: m66592-udc: Fixed bufnum of Bulk

Signed-off-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 51b19f3..084aa08 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -258,7 +258,7 @@
 		break;
 	case M66592_BULK:
 		/* isochronous pipes may be used as bulk pipes */
-		if (info->pipe > M66592_BASE_PIPENUM_BULK)
+		if (info->pipe >= M66592_BASE_PIPENUM_BULK)
 			bufnum = info->pipe - M66592_BASE_PIPENUM_BULK;
 		else
 			bufnum = info->pipe - M66592_BASE_PIPENUM_ISOC;