v3d: Fix a leak of the disassembled instruction string during debug dumps.

Fixes: ade416d023 ("broadcom: Add VC5 NIR compiler.")
(cherry picked from commit f1d98204c3)

src/broadcom/compiler/vir_to_qpu.c

@@ -364,6 +364,7 @@ v3d_dump_qpu(struct v3d_compile *c)
         for (int i = 0; i < c->qpu_inst_count; i++) {
                 const char *str = v3d_qpu_disasm(c->devinfo, c->qpu_insts[i]);
                 fprintf(stderr, "0x%016"PRIx64" %s\n", c->qpu_insts[i], str);
+                ralloc_free((void *)str);
         }
         fprintf(stderr, "\n");
 }