wil6210: fix for HW bug in interrupt setup logic

Hardware bug triggered by the MSI init while INTx asserted for some reason.
De-assert INTx prior to MSI set-up

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/wil6210/pcie_bus.c b/drivers/net/wireless/ath/wil6210/pcie_bus.c
index d96e811..c609761 100644
--- a/drivers/net/wireless/ath/wil6210/pcie_bus.c
+++ b/drivers/net/wireless/ath/wil6210/pcie_bus.c
@@ -153,6 +153,7 @@
 	pci_set_drvdata(pdev, wil);
 	wil->pdev = pdev;
 
+	wil6210_clear_irq(wil);
 	/* FW should raise IRQ when ready */
 	rc = wil_if_pcie_enable(wil);
 	if (rc) {