In smmu_get_mair_idx of smmu.c, there is a possible way to apply incorrect memory attributes to direct memory access mappings due to a logi…

In smmu_get_mair_idx of smmu.c, there is a possible way to apply incorrect memory attributes to direct memory access mappings due to a logic error. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.