mm/cma.c: cma_declare_contiguous: correct err handling

In case cma_init_reserved_mem failed, need to free the memblock
allocated by memblock_reserve or memblock_alloc_range.

Quote Catalin's comments:
  https://lkml.org/lkml/2019/2/26/482

Kmemleak is supposed to work with the memblock_{alloc,free} pair and it
ignores the memblock_reserve() as a memblock_alloc() implementation
detail. It is, however, tolerant to memblock_free() being called on
a sub-range or just a different range from a previous memblock_alloc().
So the original patch looks fine to me. FWIW:

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Peng Fan <[email protected]>
Reviewed-by: Catalin Marinas <[email protected]>
Reviewed-by: Mike Rapoport <[email protected]>
Cc: Laura Abbott <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Marek Szyprowski <[email protected]>
Cc: Andrey Konovalov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions