linux-kernel - [PATCH] KVM: PPC: Book3S: Remove unneeded NULL check before kfree()

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Date:   Sun, 12 Apr 2020 16:45:09 +0100
From:   Alex Dewar <alex.dewar@....co.uk>
To:     Paul Mackerras <paulus@...abs.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        kvm-ppc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Cc:     Alex Dewar <alex.dewar@....co.uk>
Subject: [PATCH] KVM: PPC: Book3S: Remove unneeded NULL check before kfree()

kfree() already checks for NULL arguments, so this check is reduntant.
Remove it.

Signed-off-by: Alex Dewar <alex.dewar@....co.uk>
---
 arch/powerpc/kvm/book3s_hv_nested.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/powerpc/kvm/book3s_hv_nested.c b/arch/powerpc/kvm/book3s_hv_nested.c
index dc97e5be76f61..cad324312040b 100644
--- a/arch/powerpc/kvm/book3s_hv_nested.c
+++ b/arch/powerpc/kvm/book3s_hv_nested.c
@@ -1416,8 +1416,7 @@ static long int __kvmhv_nested_page_fault(struct kvm_run *run,
 	rmapp = &memslot->arch.rmap[gfn - memslot->base_gfn];
 	ret = kvmppc_create_pte(kvm, gp->shadow_pgtable, pte, n_gpa, level,
 				mmu_seq, gp->shadow_lpid, rmapp, &n_rmap);
-	if (n_rmap)
-		kfree(n_rmap);
+	kfree(n_rmap);
 	if (ret == -EAGAIN)
 		ret = RESUME_GUEST;	/* Let the guest try again */

--
2.26.0