habanalabs: free host huge va_range if not used

If huge range is not valid, driver uses the host range also for
huge page allocations, but driver never frees its allocation.
This introduces a memory leak every time a user closes its context.
Signed-off-by: NOfir Bitton <obitton@habana.ai>
Reviewed-by: NOded Gabbay <ogabbay@kernel.org>
Signed-off-by: NOded Gabbay <ogabbay@kernel.org>

drivers/misc/habanalabs/common/memory.c

@@ -1626,6 +1626,7 @@ static int vm_ctx_init_with_ranges(struct hl_ctx *ctx,
 			goto host_hpage_range_err;
 		}
 	} else {
+		kfree(ctx->host_huge_va_range);
 		ctx->host_huge_va_range = ctx->host_va_range;
 	}