mt76: mt76u: fix a possible memory leak in mt76u_init

Remove usb workqueue if mt76u_set_endpoints fails.

Fixes: 284efb473ef5 ("mt76: mt76u: rely on a dedicated stats workqueue")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c
index fffa12c..f771ac0 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/usb.c
@@ -1157,6 +1157,7 @@ int mt76u_init(struct mt76_dev *dev,
        };
        struct usb_device *udev = interface_to_usbdev(intf);
        struct mt76_usb *usb = &dev->usb;
+       int err = -ENOMEM;
 
        mt76u_ops.rr = ext ? mt76u_rr_ext : mt76u_rr;
        mt76u_ops.wr = ext ? mt76u_wr_ext : mt76u_wr;
@@ -1176,10 +1177,8 @@ int mt76u_init(struct mt76_dev *dev,
                usb->data_len = 32;
 
        usb->data = devm_kmalloc(dev->dev, usb->data_len, GFP_KERNEL);
-       if (!usb->data) {
-               mt76u_deinit(dev);
-               return -ENOMEM;
-       }
+       if (!usb->data)
+               goto error;
 
        mutex_init(&usb->usb_ctrl_mtx);
        dev->bus = &mt76u_ops;
@@ -1189,7 +1188,15 @@ int mt76u_init(struct mt76_dev *dev,
 
        usb->sg_en = mt76u_check_sg(dev);
 
-       return mt76u_set_endpoints(intf, usb);
+       err = mt76u_set_endpoints(intf, usb);
+       if (err < 0)
+               goto error;
+
+       return 0;
+
+error:
+       mt76u_deinit(dev);
+       return err;
 }
 EXPORT_SYMBOL_GPL(mt76u_init);