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stmmac: fix an error code in stmmac_ptp_register()

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PTR_ERR(NULL) is success.  We have to preserve the error code earlier.

Fixes: 7086605a6a ("stmmac: fix error check when init ptp")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2016-10-14 22:26:11 +03:00 committed by David S. Miller
parent 93966b715b
commit 50756ebecf
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
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@ -185,8 +185,10 @@ int stmmac_ptp_register(struct stmmac_priv *priv)
priv->ptp_clock = ptp_clock_register(&priv->ptp_clock_ops,
priv->device);
if (IS_ERR(priv->ptp_clock)) {
int ret = PTR_ERR(priv->ptp_clock);
priv->ptp_clock = NULL;
return PTR_ERR(priv->ptp_clock);
return ret;
}
spin_lock_init(&priv->ptp_lock);