[PATCH] Documentation: memory - fix warning

[Lothar Rubusch <l.rubusch@gmail.com>]

The label in sphinx can refer to a document section but not to the document
header.

The handle 'memory_allocation' is used in another document(s) to refer to
GFP_KERNEL flags description in this modified document.

Since the sphinx label does not work as it is placed here, a proposal is to
better shift it to the section about memory allocation flags.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
---
 Documentation/core-api/memory-allocation.rst | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Documentation/core-api/memory-allocation.rst b/Documentation/core-api/memory-allocation.rst
index 4aa82ddd01b8..4d66ddcb9883 100644
--- a/Documentation/core-api/memory-allocation.rst
+++ b/Documentation/core-api/memory-allocation.rst
@@ -1,5 +1,3 @@
-.. _memory_allocation:
-
 =======================
 Memory Allocation Guide
 =======================
@@ -26,6 +24,9 @@ answer, although very likely you should use
 Of course there are cases when other allocation APIs and different GFP
 flags must be used.
 
+
+.. _memory_allocation:
+
 Get Free Page flags
 ===================
 
-- 
2.20.1