[PATCH] dma: at_hdmac: Fix IRQ leak in at_dma_probe()

[Hongling Zeng]

When request_irq() succeeds but a later error occurs in at_dma_probe(),
the error handling path attempts to free the IRQ by calling
platform_get_irq() again instead of using the already stored IRQ number
in the local variable 'irq'.

Fix this by using the stored 'irq' variable directly in free_irq().

Fixes: dc78baa2b90b2 ("dmaengine: Atmel HDMAC driver")
Signed-off-by: Hongling Zeng <zenghongling@xxxxxxxxxx>
---
 drivers/dma/at_hdmac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index e5b30a57c477..2a860679b9e1 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -2109,7 +2109,7 @@ static int __init at_dma_probe(struct platform_device *pdev)
 err_memset_pool_create:
 	dma_pool_destroy(atdma->lli_pool);
 err_desc_pool_create:
-	free_irq(platform_get_irq(pdev, 0), atdma);
+	free_irq(irq, atdma);
 err_irq:
 	clk_disable_unprepare(atdma->clk);
 	return err;
-- 
2.25.1