[PATCH v2] staging: rtlwifi: rtl8822b: fix to avoid NULL pointer dereference

[Aditya Pakki]

skb allocated via dev_alloc_skb can fail and return a NULL pointer.
This patch avoids such a scenario and returns, consistent with other
invocations.

---
v1: Patch collision with rtl_phydm.c, fix as per Greg
Signed-off-by: Aditya Pakki <pakki...@umn.edu>
---
 drivers/staging/rtlwifi/rtl8822be/fw.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/rtlwifi/rtl8822be/fw.c 
b/drivers/staging/rtlwifi/rtl8822be/fw.c
index f061dd1382aa..cf6b7a80b753 100644
--- a/drivers/staging/rtlwifi/rtl8822be/fw.c
+++ b/drivers/staging/rtlwifi/rtl8822be/fw.c
@@ -743,6 +743,8 @@ void rtl8822be_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, 
bool b_dl_finished)
                      u1_rsvd_page_loc, 3);
 
        skb = dev_alloc_skb(totalpacketlen);
+       if (!skb)
+               return;
        memcpy((u8 *)skb_put(skb, totalpacketlen), &reserved_page_packet,
               totalpacketlen);
 
-- 
2.17.1