bnxt_en: Fix possible memory leak when hwrm_req_replace fails

When hwrm_req_replace() fails, the driver is not invoking bnxt_req_drop()
which could cause a memory leak.

Fixes: bbf33d1 ("bnxt_en: update all firmware calls to use the new APIs")
Reviewed-by: Pavan Chebbi <[email protected]>
Signed-off-by: Kalesh AP <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Kalesh AP

drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c

@@ -208,7 +208,7 @@ int bnxt_send_msg(struct bnxt_en_dev *edev,
 
 	rc = hwrm_req_replace(bp, req, fw_msg->msg, fw_msg->msg_len);
 	if (rc)
-		return rc;
+		goto drop_req;
 
 	hwrm_req_timeout(bp, req, fw_msg->timeout);
 	resp = hwrm_req_hold(bp, req);
@@ -220,6 +220,7 @@ int bnxt_send_msg(struct bnxt_en_dev *edev,
 
 		memcpy(fw_msg->resp, resp, resp_len);
 	}
+drop_req:
 	hwrm_req_drop(bp, req);
 	return rc;
 }