KVM: PPC: Book3S: Remove redundant initialization of variable ret

The variable ret is being initialized with '-ENOMEM' that is meaningless.
So remove it.
Signed-off-by: NJing Xiangfeng <jingxiangfeng@huawei.com>
Reviewed-by: NFabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@ozlabs.org>

arch/powerpc/kvm/book3s_64_vio.c

@@ -283,7 +283,7 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 	struct kvmppc_spapr_tce_table *siter;
 	struct mm_struct *mm = kvm->mm;
 	unsigned long npages, size = args->size;
-	int ret = -ENOMEM;
+	int ret;
 
 	if (!args->size || args->page_shift < 12 || args->page_shift > 34 ||
 		(args->offset + args->size > (ULLONG_MAX >> args->page_shift)))