[PATCH] pinctrl: fix error check return value of irq_of_parse_and_map()

[cgel.zte@xxxxxxxxx]

From: Lv Ruyi <lv.ruyi@xxxxxxxxxx>

The irq_of_parse_and_map() function returns 0 on failure, and does not
return an negative value.

Fixes: 	cefc03e5995e ("pinctrl: Add Pistachio SoC pin control driver")
Reported-by: Zeal Robot <zealci@xxxxxxxxxx>
Signed-off-by: Lv Ruyi <lv.ruyi@xxxxxxxxxx>
---
 drivers/pinctrl/pinctrl-pistachio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinctrl-pistachio.c b/drivers/pinctrl/pinctrl-pistachio.c
index 8d271c6b0ca4..ff34f9755368 100644
--- a/drivers/pinctrl/pinctrl-pistachio.c
+++ b/drivers/pinctrl/pinctrl-pistachio.c
@@ -1374,7 +1374,7 @@ static int pistachio_gpio_register(struct pistachio_pinctrl *pctl)
 		}
 
 		irq = irq_of_parse_and_map(child, 0);
-		if (irq < 0) {
+		if (!irq) {
 			dev_err(pctl->dev, "No IRQ for bank %u: %d\n", i, irq);
 			of_node_put(child);
 			ret = irq;
-- 
2.25.1