KVM: remove redundant assignments in __kvm_set_memory_region

commit f2a25160887e00434ce1361007009120e1fecbda upstream.

__kvm_set_memory_region sets r to EINVAL very early.
Doing it again is not necessary. The same is true later on, where
r is assigned -ENOMEM twice.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 438851c2a797c7784f297225a2c6b4cd9237bcd8..7e76ce9254e201c6ddfdc93907806708ac118199 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -791,7 +791,6 @@ int __kvm_set_memory_region(struct kvm *kvm,
        base_gfn = mem->guest_phys_addr >> PAGE_SHIFT;
        npages = mem->memory_size >> PAGE_SHIFT;
 
-       r = -EINVAL;
        if (npages > KVM_MEM_MAX_NR_PAGES)
                goto out;
 
@@ -805,7 +804,6 @@ int __kvm_set_memory_region(struct kvm *kvm,
        new.npages = npages;
        new.flags = mem->flags;
 
-       r = -EINVAL;
        if (npages) {
                if (!old.npages)
                        change = KVM_MR_CREATE;
@@ -861,7 +859,6 @@ int __kvm_set_memory_region(struct kvm *kvm,
        }
 
        if ((change == KVM_MR_DELETE) || (change == KVM_MR_MOVE)) {
-               r = -ENOMEM;
                slots = kmemdup(kvm->memslots, sizeof(struct kvm_memslots),
                                GFP_KERNEL);
                if (!slots)