[PATCH] dpaa2-eth: Fix passing zero to 'PTR_ERR' warning

[YueHaibing]

Fix smatch warning:

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c:2419
 alloc_channel() warn: passing zero to 'ERR_PTR'

setup_dpcon() should return ERR_PTR(err) instead of zero in error
handling case.

Fixes: d7f5a9d89a55 ("dpaa2-eth: defer probe on object allocate")
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c 
b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 9b4028c0e34c..5f680b953a90 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -2375,7 +2375,7 @@ static struct fsl_mc_device *setup_dpcon(struct 
dpaa2_eth_priv *priv)
 free:
        fsl_mc_object_free(dpcon);
 
-       return NULL;
+       return ERR_PTR(err);
 }
 
 static void free_dpcon(struct dpaa2_eth_priv *priv,
@@ -2399,8 +2399,8 @@ alloc_channel(struct dpaa2_eth_priv *priv)
                return NULL;
 
        channel->dpcon = setup_dpcon(priv);
-       if (IS_ERR_OR_NULL(channel->dpcon)) {
-               err = PTR_ERR_OR_ZERO(channel->dpcon);
+       if (IS_ERR(channel->dpcon)) {
+               err = PTR_ERR(channel->dpcon);
                goto err_setup;
        }
 
-- 
2.17.1