V4L/DVB (5415): Msp_attach must return 0 if no msp3400 was found.

Returning -1 causes the probe to stop, but it should just continue
instead.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index 2fb9fe6..91078c0 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -825,7 +825,7 @@
 	if (msp_reset(client) == -1) {
 		v4l_dbg(1, msp_debug, client, "msp3400 not found\n");
 		kfree(client);
-		return -1;
+		return 0;
 	}
 
 	state = kmalloc(sizeof(*state), GFP_KERNEL);
@@ -859,7 +859,7 @@
 		v4l_dbg(1, msp_debug, client, "not an msp3400 (cannot read chip version)\n");
 		kfree(state);
 		kfree(client);
-		return -1;
+		return 0;
 	}
 
 	msp_set_audio(client);