[PATCH 3/6] x86: kvm: no need to check return value of debugfs_create functions

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <x86@kernel.org>
Cc: <kvm@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/kvm/debugfs.c | 26 ++++++++------------------
 1 file changed, 8 insertions(+), 18 deletions(-)

diff --git a/arch/x86/kvm/debugfs.c b/arch/x86/kvm/debugfs.c
index c19c7ede9bd6..827cd58400d2 100644
--- a/arch/x86/kvm/debugfs.c
+++ b/arch/x86/kvm/debugfs.c
@@ -43,26 +43,16 @@ DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_frac_fops, vcpu_get_tsc_scaling_frac_bi
 
 int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
 {
-	struct dentry *ret;
-
-	ret = debugfs_create_file("tsc-offset", 0444,
-							vcpu->debugfs_dentry,
-							vcpu, &vcpu_tsc_offset_fops);
-	if (!ret)
-		return -ENOMEM;
+	debugfs_create_file("tsc-offset", 0444, vcpu->debugfs_dentry, vcpu,
+			    &vcpu_tsc_offset_fops);
 
 	if (kvm_has_tsc_control) {
-		ret = debugfs_create_file("tsc-scaling-ratio", 0444,
-							vcpu->debugfs_dentry,
-							vcpu, &vcpu_tsc_scaling_fops);
-		if (!ret)
-			return -ENOMEM;
-		ret = debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
-							vcpu->debugfs_dentry,
-							vcpu, &vcpu_tsc_scaling_frac_fops);
-		if (!ret)
-			return -ENOMEM;
-
+		debugfs_create_file("tsc-scaling-ratio", 0444,
+				    vcpu->debugfs_dentry, vcpu,
+				    &vcpu_tsc_scaling_fops);
+		debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
+				    vcpu->debugfs_dentry, vcpu,
+				    &vcpu_tsc_scaling_frac_fops);
 	}
 
 	return 0;
-- 
2.20.1