lavfi/nlmeans_vulkan: fix memory leaks

libavfilter/vf_nlmeans_vulkan.c

@@ -424,8 +424,6 @@ static av_cold int init_weights_pipeline(FFVulkanContext *vkctx, FFVkExecPool *e
     RET(ff_vk_init_compute_pipeline(vkctx, pl, shd));
     RET(ff_vk_exec_pipeline_register(vkctx, exec, pl));
 
-    return 0;
-
 fail:
     if (spv_opaque)
         spv->free_shader(spv, &spv_opaque);
@@ -570,8 +568,6 @@ static av_cold int init_denoise_pipeline(FFVulkanContext *vkctx, FFVkExecPool *e
     RET(ff_vk_init_compute_pipeline(vkctx, pl, shd));
     RET(ff_vk_exec_pipeline_register(vkctx, exec, pl));
 
-    return 0;
-
 fail:
     if (spv_opaque)
         spv->free_shader(spv, &spv_opaque);
@@ -671,8 +667,6 @@ static av_cold int init_filter(AVFilterContext *ctx)
 
     s->initialized = 1;
 
-    return 0;
-
 fail:
     if (spv)
         spv->uninit(&spv);
@@ -1065,6 +1059,9 @@ static void nlmeans_vulkan_uninit(AVFilterContext *avctx)
 
     ff_vk_uninit(&s->vkctx);
 
+    av_freep(&s->xoffsets);
+    av_freep(&s->yoffsets);
+
     s->initialized = 0;
 }