ARM: 9519/1: dma-mapping: Fix wrong free function in __iommu_alloc_simple() error path

In __iommu_alloc_simple(), when IOMMU mapping creation fails, the error
path unconditionally called __free_from_pool() regardless of the
allocation path taken.

For the COHERENT case, memory is allocated via __alloc_simple_buffer(),
which does not use the atomic pool. Calling __free_from_pool() on such
memory silently returns without freeing, causing a page memory leak.

Fix this by matching the free function to the allocation path:
- COHERENT: use __dma_free_buffer(virt_to_page(addr), size)
- non-COHERENT: use __free_from_pool(addr, size)

Fixes: 565068221b905 ("ARM: 8561/4: dma-mapping: Fix the coherent case when iommu is used")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

0 files changed, 0 insertions, 0 deletions