[PATCH v3 19/19] common/cnxk: fix null ptr check

[Stephen Hemminger]

The pointer mode is used then checked which is a bug reported
by PVS studio.

Fixes: bd2fd34ab86f ("common/cnxk: sync eth mode change command with firmware")
Cc: tduszynski at marvell.com
Cc: stable at dpdk.org

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 drivers/common/cnxk/roc_bphy_cgx.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/common/cnxk/roc_bphy_cgx.c b/drivers/common/cnxk/roc_bphy_cgx.c
index 882cf65474..db70bafd9b 100644
--- a/drivers/common/cnxk/roc_bphy_cgx.c
+++ b/drivers/common/cnxk/roc_bphy_cgx.c
@@ -366,20 +366,20 @@ roc_bphy_cgx_set_link_mode(struct roc_bphy_cgx *roc_cgx, unsigned int lmac,
 {
 	uint64_t scr1, scr0;
 
+	if (!mode)
+		return -EINVAL;
+
+	if (!roc_cgx)
+		return -EINVAL;
+
 	if (roc_model_is_cn9k() &&
 	    (mode->use_portm_idx || mode->portm_idx || mode->mode_group_idx)) {
 		return -ENOTSUP;
 	}
 
-	if (!roc_cgx)
-		return -EINVAL;
-
 	if (!roc_bphy_cgx_lmac_exists(roc_cgx, lmac))
 		return -ENODEV;
 
-	if (!mode)
-		return -EINVAL;
-
 	scr1 = FIELD_PREP(SCR1_ETH_CMD_ID, ETH_CMD_MODE_CHANGE) |
 	       FIELD_PREP(SCR1_ETH_MODE_CHANGE_ARGS_SPEED, mode->speed) |
 	       FIELD_PREP(SCR1_ETH_MODE_CHANGE_ARGS_DUPLEX, mode->full_duplex) |
-- 
2.47.2