turnip: replace a memset(0) with zalloc in CreateRenderPass

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5451>
diff --git a/src/freedreno/vulkan/tu_pass.c b/src/freedreno/vulkan/tu_pass.c
index 371e561..3c76c07 100644
--- a/src/freedreno/vulkan/tu_pass.c
+++ b/src/freedreno/vulkan/tu_pass.c
@@ -561,12 +561,11 @@
    attachments_offset = size;
    size += pCreateInfo->attachmentCount * sizeof(pass->attachments[0]);
 
-   pass = vk_alloc2(&device->alloc, pAllocator, size, 8,
+   pass = vk_zalloc2(&device->alloc, pAllocator, size, 8,
                     VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
    if (pass == NULL)
       return vk_error(device->instance, VK_ERROR_OUT_OF_HOST_MEMORY);
 
-   memset(pass, 0, size);
    pass->attachment_count = pCreateInfo->attachmentCount;
    pass->subpass_count = pCreateInfo->subpassCount;
    pass->attachments = (void *) pass + attachments_offset;