[PATCH] KVM: arm64: eliminate unnecessary var err and jump label in set_core_reg()

[linmiaohe]

From: Miaohe Lin <linmiaohe@xxxxxxxxxx>

The var err and jump label out isn't really needed in
set_core_reg(). Clean them up.
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
 arch/arm64/kvm/guest.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 3b836c91609e..88eb6e5399ed 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -159,7 +159,6 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
 	__uint128_t tmp;
 	void *valp = &tmp;
 	u64 off;
-	int err = 0;
 
 	/* Our ID is an index into the kvm_regs struct. */
 	off = core_reg_offset_from_id(reg->id);
@@ -173,10 +172,8 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
 	if (KVM_REG_SIZE(reg->id) > sizeof(tmp))
 		return -EINVAL;
 
-	if (copy_from_user(valp, uaddr, KVM_REG_SIZE(reg->id))) {
-		err = -EFAULT;
-		goto out;
-	}
+	if (copy_from_user(valp, uaddr, KVM_REG_SIZE(reg->id)))
+		return -EFAULT;
 
 	if (off == KVM_REG_ARM_CORE_REG(regs.pstate)) {
 		u64 mode = (*(u64 *)valp) & PSR_AA32_MODE_MASK;
@@ -200,14 +197,12 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
 				return -EINVAL;
 			break;
 		default:
-			err = -EINVAL;
-			goto out;
+			return -EINVAL;
 		}
 	}
 
 	memcpy((u32 *)regs + off, valp, KVM_REG_SIZE(reg->id));
-out:
-	return err;
+	return 0;
 }
 
 #define vq_word(vq) (((vq) - SVE_VQ_MIN) / 64)
-- 
2.19.1