DMA, CMA: fix possible memory leak

We should free memory for bitmap when we find zone mismatch, otherwise
this memory will leak.

Additionally, I copy code comment from PPC KVM's CMA code to inform why
we need to check zone mis-match.

Signed-off-by: Joonsoo Kim <[email protected]>
Acked-by: Zhang Yanfei <[email protected]>
Reviewed-by: Michal Nazarewicz <[email protected]>
Reviewed-by: Aneesh Kumar K.V <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Cc: "Aneesh Kumar K.V" <[email protected]>
Cc: Marek Szyprowski <[email protected]>
Cc: Michal Nazarewicz <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Gleb Natapov <[email protected]>
Cc: Alexander Graf <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions