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mlx4: corretly check failed allocation

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When allocation fails, mlx4_alloc_cmd_mailbox returns -ENOMEM.
Since there is no case that mlx4_alloc_cmd_mailbox returns NULL,
it needs to be checked by IS_ERR, not IS_ERR_OR_NULL

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Insu Yun 2015-10-15 12:24:09 -04:00 committed by David S. Miller
parent e87eb4051e
commit 175f8d6746
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx4/mr.c
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@ -318,7 +318,7 @@ int mlx4_mr_hw_get_mpt(struct mlx4_dev *dev, struct mlx4_mr *mmr,
key, NULL);
} else {
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR_OR_NULL(mailbox))
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
err = mlx4_cmd_box(dev, 0, mailbox->dma, key,