V4L/DVB (10336): gspca - all subdrivers: Return ret instead of -1 in sd_mod_init.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/mars.c b/drivers/media/video/gspca/mars.c
index 420224a..477441e 100644
--- a/drivers/media/video/gspca/mars.c
+++ b/drivers/media/video/gspca/mars.c
@@ -423,7 +423,7 @@
 	int ret;
 	ret = usb_register(&sd_driver);
 	if (ret < 0)
-		return -1;
+		return ret;
 	PDEBUG(D_PROBE, "registered");
 	return 0;
 }