net: qed: Remove unneeded cast from memory allocation

Remove casting the values returned by memory allocation function.

Coccinelle emits WARNING: casting value returned by memory allocation
function to struct pointer is useless.

This issue was detected by using the Coccinelle.
Signed-off-by: Aishwarya Ramakrishnan <aishwaryarj100@gmail.com>
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_roce.c

@@ -736,8 +736,8 @@ static int qed_roce_sp_destroy_qp_responder(struct qed_hwfn *p_hwfn,
 
 	p_ramrod = &p_ent->ramrod.roce_destroy_qp_resp;
 
-	p_ramrod_res = (struct roce_destroy_qp_resp_output_params *)
-	    dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_ramrod_res),
+	p_ramrod_res = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
+					  sizeof(*p_ramrod_res),
 					  &ramrod_res_phys, GFP_KERNEL);
 
 	if (!p_ramrod_res) {
@@ -872,7 +872,7 @@ int qed_roce_query_qp(struct qed_hwfn *p_hwfn,
 	}
 
 	/* Send a query responder ramrod to FW to get RQ-PSN and state */
-	p_resp_ramrod_res = (struct roce_query_qp_resp_output_params *)
+	p_resp_ramrod_res =
 		dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 				   sizeof(*p_resp_ramrod_res),
 				   &resp_ramrod_res_phys, GFP_KERNEL);
@@ -920,8 +920,7 @@ int qed_roce_query_qp(struct qed_hwfn *p_hwfn,
 	}
 
 	/* Send a query requester ramrod to FW to get SQ-PSN and state */
-	p_req_ramrod_res = (struct roce_query_qp_req_output_params *)
-			   dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
+	p_req_ramrod_res = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
 					      sizeof(*p_req_ramrod_res),
 					      &req_ramrod_res_phys,
 					      GFP_KERNEL);