freedreno: move free() into fdN_context_destroy()

Following patches will be doing further cleanup after calling
fd_context_destroy() so it is easier if we move the free() into
the per-gen backend code.

Signed-off-by: Rob Clark <robdclark@gmail.com>

src/gallium/drivers/freedreno/a2xx/fd2_context.c

@@ -41,6 +41,7 @@ static void
 fd2_context_destroy(struct pipe_context *pctx)
 {
 	fd_context_destroy(pctx);
+	free(pctx);
 }
 
 static struct pipe_resource *

src/gallium/drivers/freedreno/a3xx/fd3_context.c

@@ -55,6 +55,8 @@ fd3_context_destroy(struct pipe_context *pctx)
 	fd_hw_query_fini(pctx);
 
 	fd_context_destroy(pctx);
+
+	free(fd3_ctx);
 }
 
 static const uint8_t primtypes[] = {

src/gallium/drivers/freedreno/a4xx/fd4_context.c

@@ -55,6 +55,8 @@ fd4_context_destroy(struct pipe_context *pctx)
 	fd_hw_query_fini(pctx);
 
 	fd_context_destroy(pctx);
+
+	free(fd4_ctx);
 }
 
 static const uint8_t primtypes[] = {

src/gallium/drivers/freedreno/a5xx/fd5_context.c

@@ -54,6 +54,8 @@ fd5_context_destroy(struct pipe_context *pctx)
 	u_upload_destroy(fd5_ctx->border_color_uploader);
 
 	fd_context_destroy(pctx);
+
+	free(fd5_ctx);
 }
 
 static const uint8_t primtypes[] = {

src/gallium/drivers/freedreno/freedreno_context.c

@@ -172,8 +172,6 @@ fd_context_destroy(struct pipe_context *pctx)
 			(uint32_t)ctx->stats.batch_gmem, (uint32_t)ctx->stats.batch_nondraw,
 			(uint32_t)ctx->stats.batch_restore);
 	}
-
-	FREE(ctx);
 }
 
 static void