[PATCH v2] ag71xx: fix error return code in ag71xx_probe()

[Wei Yongjun]

Fix to return error code -ENOMEM from the dmam_alloc_coherent() error
handling case instead of 0, as done elsewhere in this function.

Fixes: d51b6ce441d3 ("net: ethernet: add ag71xx driver")
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
Reviewed-by: Oleksij Rempel <o.rem...@pengutronix.de>
---
v1 -> v2: fix subsystem prefix
---
 drivers/net/ethernet/atheros/ag71xx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/atheros/ag71xx.c 
b/drivers/net/ethernet/atheros/ag71xx.c
index 72a57c6cd254..446d62e93439 100644
--- a/drivers/net/ethernet/atheros/ag71xx.c
+++ b/drivers/net/ethernet/atheros/ag71xx.c
@@ -1724,8 +1724,10 @@ static int ag71xx_probe(struct platform_device *pdev)
        ag->stop_desc = dmam_alloc_coherent(&pdev->dev,
                                            sizeof(struct ag71xx_desc),
                                            &ag->stop_desc_dma, GFP_KERNEL);
-       if (!ag->stop_desc)
+       if (!ag->stop_desc) {
+               err = -ENOMEM;
                goto err_free;
+       }
 
        ag->stop_desc->data = 0;
        ag->stop_desc->ctrl = 0;