speedstep-smi: fail on failure to aquire "ownership"

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diff -ruN linux-original/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c linux/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c
@@ -226,8 +226,10 @@
 
 	result = speedstep_smi_ownership();
 
-	if (result)
+	if (result) {
 		dprintk(KERN_INFO "cpufreq: fails an aquiring ownership of a SMI interface.\n");
+		return -EINVAL;
+	}
 
 	/* detect low and high frequency */
 	result = speedstep_smi_get_freqs(&speedstep_freqs[SPEEDSTEP_LOW].frequency,
