ps3: vuart: fix error path locking

This stray down would cause a permanent sleep which doesn't seem correct.
The other uses of this semaphore appear fairly mutex like it's even
initialized with init_MUTEX() ..  So here a patch for removing this one
down().

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/ps3/ps3-vuart.c b/drivers/ps3/ps3-vuart.c
index 9dea585..bb8d5b1 100644
--- a/drivers/ps3/ps3-vuart.c
+++ b/drivers/ps3/ps3-vuart.c
@@ -1074,7 +1074,6 @@
 	if (result) {
 		dev_dbg(&dev->core, "%s:%d: drv->probe failed\n",
 			__func__, __LINE__);
-		down(&vuart_bus_priv.probe_mutex);
 		goto fail_probe;
 	}