[PATCH mt76 04/15] wifi: mt76: mt7915: release hif2 reference on probe IRQ failure

[Felix Fietkau <nbd@nbd.name>]

The hif2 reference obtained by mt7915_pci_init_hif2() is only released on
error paths that key off dev->hif2, which is not assigned until after the
IRQ setup. If pci_alloc_irq_vectors() or the primary devm_request_irq()
fails, the reference leaks. Drop it explicitly on those paths via
mt7915_put_hif2().

Fixes: f68d67623dec ("mt76: mt7915: add Wireless Ethernet Dispatch support")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/mt7915/pci.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/pci.c b/drivers/net/wireless/mediatek/mt76/mt7915/pci.c
index 12b3e2dd530a..8007e620048b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/pci.c
@@ -144,16 +144,20 @@ static int mt7915_pci_probe(struct pci_dev *pdev,
 		hif2 = mt7915_pci_init_hif2(pdev);
 
 		ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
-		if (ret < 0)
+		if (ret < 0) {
+			mt7915_put_hif2(hif2);
 			goto free_device;
+		}
 
 		irq = pdev->irq;
 	}
 
 	ret = devm_request_irq(mdev->dev, irq, mt7915_irq_handler,
 			       IRQF_SHARED, KBUILD_MODNAME, dev);
-	if (ret)
+	if (ret) {
+		mt7915_put_hif2(hif2);
 		goto free_wed_or_irq_vector;
+	}
 
 	/* master switch of PCIe tnterrupt enable */
 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
-- 
2.53.0