qcacmn: Fix a memory leak in qdf_mem_shared_mem_alloc

qdf_mem_shared_mem_alloc invokes qdf_mem_dma_get_sgtable which will alloc
memory.
This memory should be free in qdf_mem_shared_mem_free by sg_free_table.

Change-Id: I3ad4bd2ff7a80d4051f15dcb04e0265707c2712d
CRs-Fixed: 2131270
3 files changed