[PATCH net] net: b44: fix error return code in b44_init_one()

[Zhang Changzhong]

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 39a6f4bce6b4 ("b44: replace the ssb_dma API with the generic DMA API")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzh...@huawei.com>
---
 drivers/net/ethernet/broadcom/b44.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/b44.c 
b/drivers/net/ethernet/broadcom/b44.c
index 74c1778..b455b60 100644
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -2383,7 +2383,8 @@ static int b44_init_one(struct ssb_device *sdev,
                goto err_out_free_dev;
        }
 
-       if (dma_set_mask_and_coherent(sdev->dma_dev, DMA_BIT_MASK(30))) {
+       err = dma_set_mask_and_coherent(sdev->dma_dev, DMA_BIT_MASK(30));
+       if (err) {
                dev_err(sdev->dev,
                        "Required 30BIT DMA mask unsupported by the system\n");
                goto err_out_powerdown;
-- 
2.9.5