dpaa2-eth: Use PTR_ERR_OR_ZERO where appropriate

Use PTR_ERR_OR_ZERO instead of PTR_ERR in cases where
zero is a valid input. Reported by smatch.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 63b1ecc..7d2390e 100644 (file)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -1972,7 +1972,7 @@ alloc_channel(struct dpaa2_eth_priv *priv)
 
        channel->dpcon = setup_dpcon(priv);
        if (IS_ERR_OR_NULL(channel->dpcon)) {
-               err = PTR_ERR(channel->dpcon);
+               err = PTR_ERR_OR_ZERO(channel->dpcon);
                goto err_setup;
        }
 
@@ -2028,7 +2028,7 @@ static int setup_dpio(struct dpaa2_eth_priv *priv)
                /* Try to allocate a channel */
                channel = alloc_channel(priv);
                if (IS_ERR_OR_NULL(channel)) {
-                       err = PTR_ERR(channel);
+                       err = PTR_ERR_OR_ZERO(channel);
                        if (err != -EPROBE_DEFER)
                                dev_info(dev,
                                         "No affine channel for cpu %d and above\n", i);