IB/hfi1: Remove intermediate var in hfi1_user_sdma_alloc_queues()

* Pass a product for a call of the function "vmalloc_user" without storing
  it in an intermediate variable.

* Delete the local variable "memsize" which became unnecessary with
  this refactoring.
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hfi1/user_sdma.c

@@ -376,7 +376,6 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt, struct file *fp)
 {
 	struct hfi1_filedata *fd;
 	int ret = 0;
-	unsigned memsize;
 	char buf[64];
 	struct hfi1_devdata *dd;
 	struct hfi1_user_sdma_comp_q *cq;
@@ -444,8 +443,8 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt, struct file *fp)
 	if (!cq)
 		goto cq_nomem;
 
-	memsize = PAGE_ALIGN(sizeof(*cq->comps) * hfi1_sdma_comp_ring_size);
-	cq->comps = vmalloc_user(memsize);
+	cq->comps = vmalloc_user(PAGE_ALIGN(sizeof(*cq->comps)
+				 * hfi1_sdma_comp_ring_size));
 	if (!cq->comps)
 		goto cq_comps_nomem;