[PATCH] staging: rtlwifi: Fix potential NULL pointer dereference

[Aditya Pakki]

phydm.internal is allocated using kzalloc which is used multiple
times without a check for NULL pointer. This patch avoids such a
scenario.

Signed-off-by: Aditya Pakki <pakki001@xxxxxxx>
---
 drivers/staging/rtlwifi/phydm/rtl_phydm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/staging/rtlwifi/phydm/rtl_phydm.c b/drivers/staging/rtlwifi/phydm/rtl_phydm.c
index 9930ed954abb..37c7fcb72b65 100644
--- a/drivers/staging/rtlwifi/phydm/rtl_phydm.c
+++ b/drivers/staging/rtlwifi/phydm/rtl_phydm.c
@@ -181,6 +181,9 @@ static int rtl_phydm_init_priv(struct rtl_priv *rtlpriv,
 	rtlpriv->phydm.internal =
 		kzalloc(sizeof(struct phy_dm_struct), GFP_KERNEL);
 
+	if (!rtlpriv->phydm.internal)
+		return -ENOMEM;
+
 	_rtl_phydm_init_com_info(rtlpriv, ic, params);
 
 	odm_init_all_timers(dm);
-- 
2.17.1