[PATCH] InfiniBand/mthca: initialize mutex earlier

The cap_mask_mutex needs to be initialized before ib_register_device(),
because device registration will call client init functions that may try to
modify the capability mask.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/infiniband/hw/mthca/mthca_provider.c

@@ -634,6 +634,8 @@ int mthca_register_device(struct mthca_dev *dev)
 	dev->ib_dev.detach_mcast         = mthca_multicast_detach;
 	dev->ib_dev.process_mad          = mthca_process_mad;
 
+	init_MUTEX(&dev->cap_mask_mutex);
+
 	ret = ib_register_device(&dev->ib_dev);
 	if (ret)
 		return ret;
@@ -647,8 +649,6 @@ int mthca_register_device(struct mthca_dev *dev)
 		}
 	}
 
-	init_MUTEX(&dev->cap_mask_mutex);
-
 	return 0;
 }