fast-get: (cosmetic) use a local variable

In fast_put() sram_ptr == entry->sram_ptr, use the former since it's
shorter.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

zephyr/lib/fast-get.c

@@ -284,7 +284,7 @@ void fast_put(struct k_heap *heap, struct k_mem_domain *mdom, const void *sram_p
 	entry->refcount--;
 
 	if (!entry->refcount) {
-		LOG_DBG("freeing buffer %p", entry->sram_ptr);
+		LOG_DBG("freeing buffer %p", sram_ptr);
 		sof_heap_free(heap, entry->sram_ptr);
 	}
 
@@ -299,7 +299,7 @@ void fast_put(struct k_heap *heap, struct k_mem_domain *mdom, const void *sram_p
 	 */
 	if (entry->size > FAST_GET_MAX_COPY_SIZE && entry->mdom && mdom) {
 		struct k_mem_partition part = {
-			.start = (uintptr_t)entry->sram_ptr,
+			.start = (uintptr_t)sram_ptr,
 			.size = ALIGN_UP(entry->size, CONFIG_MM_DRV_PAGE_SIZE),
 			.attr = K_MEM_PARTITION_P_RO_U_RO | XTENSA_MMU_CACHED_WB,
 		};