[PATCH] host1x: bus: Fix missing ops null check in error teardown

[shayderrr <darknessshayder@gmail.com>]

In host1x_device_init(), the error teardown paths do not check
client->ops before dereferencing it, unlike the forward init paths
which correctly guard with 'client->ops &&'. This can result in a
NULL pointer dereference if client->ops is NULL.

Fix by adding the missing client->ops check in both the teardown
and teardown_late labels.

Signed-off-by: shayderrr <darknessshayder@gmail.com>
---
 drivers/gpu/host1x/bus.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index f814eb4941c0..43ce048de73a 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -221,7 +221,7 @@ int host1x_device_init(struct host1x_device *device)
 
 teardown:
 	list_for_each_entry_continue_reverse(client, &device->clients, list)
-		if (client->ops->exit)
+		if (client->ops && client->ops->exit)
 			client->ops->exit(client);
 
 	/* reset client to end of list for late teardown */
@@ -229,7 +229,7 @@ int host1x_device_init(struct host1x_device *device)
 
 teardown_late:
 	list_for_each_entry_continue_reverse(client, &device->clients, list)
-		if (client->ops->late_exit)
+		if (client->ops && client->ops->late_exit)
 			client->ops->late_exit(client);
 
 	mutex_unlock(&device->clients_lock);
-- 
2.50.1 (Apple Git-155)