rtase: Fix a check for error in rtase_alloc_msix()

The pci_irq_vector() function never returns zero.  It returns negative
error codes or a positive non-zero IRQ number.  Fix the error checking to
test for negatives.

Fixes: a36e9f5 ("rtase: Add support for a pci table in this module")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Reviewed-by: Kalesh AP <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

drivers/net/ethernet/realtek/rtase/rtase_main.c

@@ -1827,7 +1827,7 @@ static int rtase_alloc_msix(struct pci_dev *pdev, struct rtase_private *tp)
 
 	for (i = 0; i < tp->int_nums; i++) {
 		irq = pci_irq_vector(pdev, i);
-		if (!irq) {
+		if (irq < 0) {
 			pci_disable_msix(pdev);
 			return irq;
 		}