wan/fsl_ucc_hdlc: avoid possible NULL pointer dereference

All assignments to components of priv should only
occur after the check if prif is NULL.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index 2fc50ec453d0..6f044450b702 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -862,7 +862,7 @@ static int uhdlc_suspend(struct device *dev)
 static int uhdlc_resume(struct device *dev)
 {
         struct ucc_hdlc_private *priv = dev_get_drvdata(dev);
-        struct ucc_tdm *utdm = priv->utdm;
+        struct ucc_tdm *utdm;
         struct ucc_tdm_info *ut_info;
         struct ucc_fast __iomem *uf_regs;
         struct ucc_fast_private *uccf;
@@ -877,6 +877,7 @@ static int uhdlc_resume(struct device *dev)
         if (!netif_running(priv->ndev))
                 return 0;
 
+        utdm = priv->utdm;
         ut_info = priv->ut_info;
         uf_info = &ut_info->uf_info;
         uf_regs = priv->uf_regs;