KVM: VMX: restore vmx_vmexit alignment

Commit 8bd200d2 ("KVM: VMX: Flatten __vmx_vcpu_run()") changed
vmx_vmexit from SYM_FUNC_START to SYM_INNER_LABEL, accidentally
removing 16 byte alignment as SYM_FUNC_START uses SYM_A_ALIGN and
SYM_INNER_LABEL does not. Josh mentioned [1] this was unintentional.

Fix by changing to SYM_INNER_LABEL_ALIGN instead.

[1] https://lore.kernel.org/lkml/Y3adkSe%2FJ70PqUyt@p183

Fixes: 8bd200d2 ("KVM: VMX: Flatten __vmx_vcpu_run()")
Signed-off-by: Jon Kohler <jon@nutanix.com>
Suggested-by: Alexey Dobriyan <adobriyan@gmail.com>
CC: Josh Poimboeuf <jpoimboe@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Reviewed-by: Jim Mattson <jmattson@google.com>
Link: https://lore.kernel.org/r/20230531155821.80590-1-jon@nutanix.comSigned-off-by: Sean Christopherson <seanjc@google.com>

arch/x86/kvm/vmx/vmenter.S

@@ -187,7 +187,7 @@ SYM_FUNC_START(__vmx_vcpu_run)
 	_ASM_EXTABLE(.Lvmresume, .Lfixup)
 	_ASM_EXTABLE(.Lvmlaunch, .Lfixup)
 
-SYM_INNER_LABEL(vmx_vmexit, SYM_L_GLOBAL)
+SYM_INNER_LABEL_ALIGN(vmx_vmexit, SYM_L_GLOBAL)
 
 	/* Restore unwind state from before the VMRESUME/VMLAUNCH. */
 	UNWIND_HINT_RESTORE