[PATCH] iwlwifi: mvm: fix memdup.cocci warnings

[kernel test robot]

From: kernel test robot <l...@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/rfi.c:110:8-15: WARNING opportunity for 
kmemdup

 Use kmemdup rather than duplicating its implementation

Generated by: scripts/coccinelle/api/memdup.cocci

Fixes: 21254908cbe9 ("iwlwifi: mvm: add RFI-M support")
CC: Gregory Greenman <gregory.green...@intel.com>
Reported-by: kernel test robot <l...@intel.com>
Signed-off-by: kernel test robot <l...@intel.com>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   0f4498cef9f5cd18d7c6639a2a902ec1edc5be4e
commit: 21254908cbe995a3982a23da32c30d1b43467043 iwlwifi: mvm: add RFI-M support

 rfi.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
@@ -107,12 +107,10 @@ struct iwl_rfi_freq_table_resp_cmd *iwl_
        if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != resp_size))
                return ERR_PTR(-EIO);
 
-       resp = kzalloc(resp_size, GFP_KERNEL);
+       resp = kmemdup(cmd.resp_pkt->data, resp_size, GFP_KERNEL);
        if (!resp)
                return ERR_PTR(-ENOMEM);
 
-       memcpy(resp, cmd.resp_pkt->data, resp_size);
-
        iwl_free_resp(&cmd);
        return resp;
 }