scsi: qla2xxx: Remove two superfluous if-tests

This patch fixes the following Coverity complaint:

Null-checking sp->u.iocb_cmd.u.ctarg.rsp suggests that it may be null, but
it has already been dereferenced on all paths leading to the check.

See also commit e374f9f5 ("scsi: qla2xxx: Migrate switch registration commands away from mailbox interface") # v4.16.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_gs.c

@@ -3295,20 +3295,17 @@ static void qla2x00_async_gpnid_sp_done(srb_t *sp, int res)
 	e = qla2x00_alloc_work(vha, QLA_EVT_UNMAP);
 	if (!e) {
 		/* please ignore kernel warning. otherwise, we have mem leak. */
-		if (sp->u.iocb_cmd.u.ctarg.req) {
-			dma_free_coherent(&vha->hw->pdev->dev,
-				sp->u.iocb_cmd.u.ctarg.req_allocated_size,
-				sp->u.iocb_cmd.u.ctarg.req,
-				sp->u.iocb_cmd.u.ctarg.req_dma);
-			sp->u.iocb_cmd.u.ctarg.req = NULL;
-		}
-		if (sp->u.iocb_cmd.u.ctarg.rsp) {
-			dma_free_coherent(&vha->hw->pdev->dev,
-				sp->u.iocb_cmd.u.ctarg.rsp_allocated_size,
-				sp->u.iocb_cmd.u.ctarg.rsp,
-				sp->u.iocb_cmd.u.ctarg.rsp_dma);
-			sp->u.iocb_cmd.u.ctarg.rsp = NULL;
-		}
+		dma_free_coherent(&vha->hw->pdev->dev,
+				  sp->u.iocb_cmd.u.ctarg.req_allocated_size,
+				  sp->u.iocb_cmd.u.ctarg.req,
+				  sp->u.iocb_cmd.u.ctarg.req_dma);
+		sp->u.iocb_cmd.u.ctarg.req = NULL;
+
+		dma_free_coherent(&vha->hw->pdev->dev,
+				  sp->u.iocb_cmd.u.ctarg.rsp_allocated_size,
+				  sp->u.iocb_cmd.u.ctarg.rsp,
+				  sp->u.iocb_cmd.u.ctarg.rsp_dma);
+		sp->u.iocb_cmd.u.ctarg.rsp = NULL;
 
 		sp->free(sp);
 		return;