iommu/fsl_pamu: Replace NO_IRQ by 0

NO_IRQ is used to check the return of irq_of_parse_and_map().

On some architecture NO_IRQ is 0, on other architectures it is -1.

irq_of_parse_and_map() returns 0 on error, independent of NO_IRQ.

So use 0 instead of using NO_IRQ.

Signed-off-by: Christophe Leroy <[email protected]>
Reviewed-by: Robin Murphy <[email protected]>
Link: https://lore.kernel.org/r/2a2570a8d12c80a7d36837b6c586daa708ca09d7.1665033732.git.christophe.leroy@csgroup.eu
Signed-off-by: Joerg Roedel <[email protected]>

Author: chleroy

drivers/iommu/fsl_pamu.c

@@ -779,7 +779,7 @@ static int fsl_pamu_probe(struct platform_device *pdev)
 	of_get_address(dev->of_node, 0, &size, NULL);
 
 	irq = irq_of_parse_and_map(dev->of_node, 0);
-	if (irq == NO_IRQ) {
+	if (!irq) {
 		dev_warn(dev, "no interrupts listed in PAMU node\n");
 		goto error;
 	}
@@ -903,7 +903,7 @@ static int fsl_pamu_probe(struct platform_device *pdev)
 	return 0;
 
 error:
-	if (irq != NO_IRQ)
+	if (irq)
 		free_irq(irq, data);
 
 	kfree_sensitive(data);