gpu: nvgpu: Fix mutex MISRA 17.7 violations

MISRA Rule-17.7 requires the return value of all functions to be used.
Fix is either to use the return value or change the function to return
void. This patch contains fix for calls to nvgpu_mutex_init and
improves related error handling.

JIRA NVGPU-677

Change-Id: I609fa138520cc7ccfdd5aa0e7fd28c8ca0b3a21c
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1805598
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gp106/flcn_gp106.h b/drivers/gpu/nvgpu/gp106/flcn_gp106.h
index a558e4ef..49275234 100644
--- a/drivers/gpu/nvgpu/gp106/flcn_gp106.h
+++ b/drivers/gpu/nvgpu/gp106/flcn_gp106.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2018, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -22,6 +22,6 @@
 #ifndef __FLCN_GP106_H__
 #define __FLCN_GP106_H__
 
-void gp106_falcon_hal_sw_init(struct nvgpu_falcon *flcn);
+int gp106_falcon_hal_sw_init(struct nvgpu_falcon *flcn);
 
 #endif /* __FLCN_GP106_H__ */