KVM: MIPS: remove unneeded semicolon

Eliminate the following coccicheck warning:
./arch/mips/kvm/mips.c:151:2-3: Unneeded semicolon
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: NYang Li <yang.lee@linux.alibaba.com>
Reviewed-by: NHuacai Chen <chenhuacai@kernel.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/kvm/mips.c

@@ -148,7 +148,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 	default:
 		/* Unsupported KVM type */
 		return -EINVAL;
-	};
+	}
 
 	/* Allocate page table to map GPA -> RPA */
 	kvm->arch.gpa_mm.pgd = kvm_pgd_alloc();