mwifiex: update command response skb length correctly

Same skb is being reused for storing command response from firmware
in PCIe chipsets. There was a bug while updating the skb length.
This patch ensures skb length correctly gets updated based on rx_len.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/marvell/mwifiex/pcie.c

@@ -1616,6 +1616,7 @@ static int mwifiex_pcie_process_cmd_complete(struct mwifiex_adapter *adapter)
 
 	pkt_len = *((__le16 *)skb->data);
 	rx_len = le16_to_cpu(pkt_len);
+	skb_put(skb, MWIFIEX_UPLD_SIZE - skb->len);
 	skb_trim(skb, rx_len);
 	skb_pull(skb, INTF_HEADER_LEN);