staging: android: ion: Remove check of idev->debug_root

We will go on initial idev if failed to create debug_root, and it does
not matter to check the return value of this debugfs call, just remove it.
Signed-off-by: NYisheng Xie <xieyisheng1@huawei.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/ion.c

@@ -585,9 +585,6 @@ static int ion_device_create(void)
 	}
 
 	idev->debug_root = debugfs_create_dir("ion", NULL);
-	if (!idev->debug_root)
-		pr_err("ion: failed to create debugfs root directory.\n");
-
 	idev->buffers = RB_ROOT;
 	mutex_init(&idev->buffer_lock);
 	init_rwsem(&idev->lock);