gpu: nvgpu: posix: Init enabled flags in nvgpu_posix_probe()

Also clean up the code a bit to be more MISRA friendly. Although
this isn't necessary it does help reduce false positives in the
various scans.

JIRA NVGPU-1323

Change-Id: I89a857ff69cc7669990bff942011ef1e11500327
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1941536
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Scott Long <scottl@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Philip Elcan <pelcan@nvidia.com>
Reviewed-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/os/posix/nvgpu.c

@@ -30,6 +30,7 @@
 #include <nvgpu/nvgpu_common.h>
 #include <nvgpu/os_sched.h>
 #include <nvgpu/gk20a.h>
+#include <nvgpu/enabled.h>
 
 #include <nvgpu/posix/probe.h>
 
@@ -117,23 +118,29 @@ struct gk20a *nvgpu_posix_probe(void)
 {
 	struct gk20a *g;
 	struct nvgpu_os_posix *p;
-	int err;
 
 	p = malloc(sizeof(*p));
-	if (p == NULL)
+	if (p == NULL) {
 		return NULL;
+	}
 
 	g = &p->g;
-
 	g->log_mask = 0;
+	g->mm.g = g;
 
-	err = nvgpu_kmem_init(g);
-	if (err != 0)
-		goto fail;
+	if (nvgpu_kmem_init(g) != 0) {
+		goto fail_kmem;
+	}
+
+	if (nvgpu_init_enabled_flags(g) != 0) {
+		goto fail_enabled_flags;
+	}
 
 	return g;
 
-fail:
+fail_enabled_flags:
+	nvgpu_kmem_fini(g, 0);
+fail_kmem:
 	free(p);
 
 	return NULL;
@@ -144,5 +151,6 @@ void nvgpu_posix_cleanup(struct gk20a *g)
 	struct nvgpu_os_posix *p = nvgpu_os_posix_from_gk20a(g);
 
 	nvgpu_kmem_fini(g, 0);
+	nvgpu_free_enabled_flags(g);
 	free(p);
 }