KVM: VMX: Reorder clearing of registers in the vCPU-run assembly flow

Move the clearing of the common registers (not 64-bit-only) to the start
of the flow that clears registers holding guest state.  This is
purely a cosmetic change so that the label doesn't point at a blank line
and a #define.

No functional change intended.
Signed-off-by: NSean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/vmx/vmenter.S

@@ -185,7 +185,12 @@ ENTRY(__vmx_vcpu_run)
 	 * free.  RSP and RAX are exempt as RSP is restored by hardware during
 	 * VM-Exit and RAX is explicitly loaded with 0 or 1 to return VM-Fail.
 	 */
-1:
+1:	xor %ebx, %ebx
+	xor %ecx, %ecx
+	xor %edx, %edx
+	xor %esi, %esi
+	xor %edi, %edi
+	xor %ebp, %ebp
 #ifdef CONFIG_X86_64
 	xor %r8d,  %r8d
 	xor %r9d,  %r9d
@@ -196,12 +201,6 @@ ENTRY(__vmx_vcpu_run)
 	xor %r14d, %r14d
 	xor %r15d, %r15d
 #endif
-	xor %ebx, %ebx
-	xor %ecx, %ecx
-	xor %edx, %edx
-	xor %esi, %esi
-	xor %edi, %edi
-	xor %ebp, %ebp
 
 	/* "POP" @regs. */
 	add $WORD_SIZE, %_ASM_SP