RDMA/mana_ib: use the correct page size for mapping user-mode doorbell page

jira LE-3812
commit-author Long Li <longli@microsoft.com>
commit 4a3b99b

When mapping doorbell page from user-mode, the driver should use the system
page size as this memory is allocated via mmap() from user-mode.

	Cc: stable@vger.kernel.org
Fixes: 0266a17 ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
	Signed-off-by: Long Li <longli@microsoft.com>
Link: https://patch.msgid.link/1725030993-16213-2-git-send-email-longli@linuxonhyperv.com
	Signed-off-by: Leon Romanovsky <leon@kernel.org>
(cherry picked from commit 4a3b99b)
	Signed-off-by: Shreeya Patel <spatel@ciq.com>
Signed-off-by: Jonathan Maple <jmaple@ciq.com>
Signed-off-by: Shreeya Patel <spatel@ciq.com>
Signed-off-by: Jonathan Maple <jmaple@ciq.com>

Author: shreeya-patel98

drivers/infiniband/hw/mana/main.c

@@ -460,13 +460,13 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
 	      PAGE_SHIFT;
 	prot = pgprot_writecombine(vma->vm_page_prot);
 
-	ret = rdma_user_mmap_io(ibcontext, vma, pfn, gc->db_page_size, prot,
+	ret = rdma_user_mmap_io(ibcontext, vma, pfn, PAGE_SIZE, prot,
 				NULL);
 	if (ret)
 		ibdev_dbg(ibdev, "can't rdma_user_mmap_io ret %d\n", ret);
 	else
-		ibdev_dbg(ibdev, "mapped I/O pfn 0x%llx page_size %u, ret %d\n",
-			  pfn, gc->db_page_size, ret);
+		ibdev_dbg(ibdev, "mapped I/O pfn 0x%llx page_size %lu, ret %d\n",
+			  pfn, PAGE_SIZE, ret);
 
 	return ret;
 }