[PATCH:intel-gpu-tools] Move free(cmd) to after last use of cmd in intel_gpu_top

[Alan Coopersmith]

Error: Use after free (CWE 416)
   Use after free of pointer 'cmd' in call to fprintf
        at line 496 of tools/intel_gpu_top.c in function 'main'.
          Previously freed at line 491 with free.
[ This bug was found by the Parfait 0.4.2 bug checking tool.
  For more information see http://labs.oracle.com/projects/parfait/ ]

Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
---
 tools/intel_gpu_top.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index bad4794..5a016c7 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -488,7 +488,6 @@ int main(int argc, char **argv)
 		else if (child_pid == 0) {
 			int res;
 			res = system(cmd);
-			free(cmd);
 			if (res < 0)
 				perror("running command");
 			if (output) {
@@ -496,6 +495,7 @@ int main(int argc, char **argv)
 				fprintf(output, "# %s exited with status %d\n", cmd, res);
 				fflush(output);
 			}
+			free(cmd);
 			exit(0);
 		} else {
 			free(cmd);
-- 
1.7.3.2