wifi: brcmsmac: Use kvmemdup to simplify the code

Use kvmemdup instead of kvmalloc() + memcpy() to simplify the code.

No functional change.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20240821070257.2298559-1-ruanjinjie@huawei.com

drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c

@@ -1611,18 +1611,16 @@ int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
 			if (le32_to_cpu(hdr->idx) == idx) {
 				pdata = wl->fw.fw_bin[i]->data +
 					le32_to_cpu(hdr->offset);
-				*pbuf = kvmalloc(len, GFP_KERNEL);
+				*pbuf = kvmemdup(pdata, len, GFP_KERNEL);
 				if (*pbuf == NULL)
-					goto fail;
-				memcpy(*pbuf, pdata, len);
+					return -ENOMEM;
 				return 0;
 			}
 		}
 	}
 	brcms_err(wl->wlc->hw->d11core,
 		  "ERROR: ucode buf tag:%d can not be found!\n", idx);
 	*pbuf = NULL;
-fail:
 	return -ENODATA;
 }