[Accel-config] [PATCH v1 4/5] accel-config: Print error message associated with error at exit

From: Ramesh Thomas <ramesh.thomas(a)intel.com>

Assign error code returned by commands to errno and use perror to print
a short description of the error at app exit.

Signed-off-by: Ramesh Thomas <ramesh.thomas(a)intel.com>
---
 accfg/accel-config.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/accfg/accel-config.c b/accfg/accel-config.c
index f12e449..de6fdb9 100644
--- a/accfg/accel-config.c
+++ b/accfg/accel-config.c
@@ -143,5 +143,8 @@ int main(int argc, const char **argv)
 	if (!rc)
 		return EXIT_SUCCESS;
 error_exit:
+	errno = abs(rc);
+	perror("Error");
+
 	return EXIT_FAILURE;
 }
-- 
2.26.2