[PATCH -next] pinctrl: mcp23s08: Fix missing unlock on error in mcp23s08_irq()

[Zou Wei <zou_wei@xxxxxxxxxx>]

Add the missing unlock before return from function mcp23s08_irq()
in the error handling case.

Fixes: 897120d41e7a ("pinctrl: mcp23s08: fix race condition in irq handler")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Zou Wei <zou_wei@xxxxxxxxxx>
---
 drivers/pinctrl/pinctrl-mcp23s08.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c b/drivers/pinctrl/pinctrl-mcp23s08.c
index 799d596..e12aa09 100644
--- a/drivers/pinctrl/pinctrl-mcp23s08.c
+++ b/drivers/pinctrl/pinctrl-mcp23s08.c
@@ -353,6 +353,7 @@ static irqreturn_t mcp23s08_irq(int irq, void *data)
 
 	if (intf == 0) {
 		/* There is no interrupt pending */
+		goto unlock;
 		return IRQ_HANDLED;
 	}
 
-- 
2.6.2