hw/riscv/numa.c: use g_autofree in socket_fdt_write_distance_matrix()

Use g_autofree in 'dist_matrix' to avoid the manual g_free().

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240122221529.86562-3-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

hw/riscv/numa.c

@@ -167,7 +167,8 @@ void riscv_socket_fdt_write_id(const MachineState *ms, const char *node_name,
 void riscv_socket_fdt_write_distance_matrix(const MachineState *ms)
 {
     int i, j, idx;
-    uint32_t *dist_matrix, dist_matrix_size;
+    g_autofree uint32_t *dist_matrix = NULL;
+    uint32_t dist_matrix_size;
 
     if (numa_enabled(ms) && ms->numa_state->have_numa_distance) {
         dist_matrix_size = riscv_socket_count(ms) * riscv_socket_count(ms);
@@ -189,7 +190,6 @@ void riscv_socket_fdt_write_distance_matrix(const MachineState *ms)
                                 "numa-distance-map-v1");
         qemu_fdt_setprop(ms->fdt, "/distance-map", "distance-matrix",
                          dist_matrix, dist_matrix_size);
-        g_free(dist_matrix);
     }
 }