[kvmarm:fixes 18/18] arch/arm64/kvm/hyp/nvhe/mem_protect.c:1086:9: warning: variable 'ret' is uninitialized when used here

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git fixes
head:   eabc7aaef7a553b64bf6e631ce04526af6c8d104
commit: eabc7aaef7a553b64bf6e631ce04526af6c8d104 [18/18] KVM: arm64: Simplify np-guest hypercalls
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20250210/202502100911.8c9DbtKD-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250210/202502100911.8c9DbtKD-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502100911.8c9DbtKD-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/arm64/kvm/hyp/nvhe/mem_protect.c:1086:9: warning: variable 'ret' is uninitialized when used here [-Wuninitialized]
    1086 |         return ret;
         |                ^~~
   arch/arm64/kvm/hyp/nvhe/mem_protect.c:1076:9: note: initialize the variable 'ret' to silence this warning
    1076 |         int ret;
         |                ^
         |                 = 0
   1 warning generated.


vim +/ret +1086 arch/arm64/kvm/hyp/nvhe/mem_protect.c

76f0b18b3db578 Quentin Perret 2024-12-18  1071  
76f0b18b3db578 Quentin Perret 2024-12-18  1072  int __pkvm_host_mkyoung_guest(u64 gfn, struct pkvm_hyp_vcpu *vcpu)
76f0b18b3db578 Quentin Perret 2024-12-18  1073  {
76f0b18b3db578 Quentin Perret 2024-12-18  1074  	struct pkvm_hyp_vm *vm = pkvm_hyp_vcpu_to_hyp_vm(vcpu);
76f0b18b3db578 Quentin Perret 2024-12-18  1075  	u64 ipa = hyp_pfn_to_phys(gfn);
76f0b18b3db578 Quentin Perret 2024-12-18  1076  	int ret;
76f0b18b3db578 Quentin Perret 2024-12-18  1077  
eabc7aaef7a553 Quentin Perret 2025-02-07  1078  	if (pkvm_hyp_vm_is_protected(vm))
eabc7aaef7a553 Quentin Perret 2025-02-07  1079  		return -EPERM;
76f0b18b3db578 Quentin Perret 2024-12-18  1080  
eabc7aaef7a553 Quentin Perret 2025-02-07  1081  	assert_host_shared_guest(vm, ipa);
eabc7aaef7a553 Quentin Perret 2025-02-07  1082  	guest_lock_component(vm);
76f0b18b3db578 Quentin Perret 2024-12-18  1083  	kvm_pgtable_stage2_mkyoung(&vm->pgt, ipa, 0);
76f0b18b3db578 Quentin Perret 2024-12-18  1084  	guest_unlock_component(vm);
76f0b18b3db578 Quentin Perret 2024-12-18  1085  
76f0b18b3db578 Quentin Perret 2024-12-18 @1086  	return ret;

:::::: The code at line 1086 was first introduced by commit
:::::: 76f0b18b3db57868fb0cabe691201aad3085b712 KVM: arm64: Introduce __pkvm_host_mkyoung_guest()

:::::: TO: Quentin Perret <qperret at google.com>
:::::: CC: Marc Zyngier <maz at kernel.org>

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