[patch] add some unlocks on error paths irq_comm.c

[Dan Carpenter]

There were a couple unlocks missing.  They were found by smatch static 
checker.  Compile tested.

regards,
dan carpenter

Signed-off-by: Dan Carpenter <erro...@gmail.com>

--- orig/virt/kvm/irq_comm.c    2009-11-08 19:00:50.000000000 +0200
+++ devel/virt/kvm/irq_comm.c   2009-11-08 19:04:45.000000000 +0200
@@ -209,6 +209,7 @@
                                sizeof(kvm->arch.irq_sources_bitmap));
 
        if (irq_source_id >= sizeof(kvm->arch.irq_sources_bitmap)) {
+               mutex_unlock(&kvm->irq_lock);
                printk(KERN_WARNING "kvm: exhaust allocatable IRQ sources!\n");
                return -EFAULT;
        }
@@ -229,6 +230,7 @@
        mutex_lock(&kvm->irq_lock);
        if (irq_source_id < 0 ||
            irq_source_id >= sizeof(kvm->arch.irq_sources_bitmap)) {
+               mutex_unlock(&kvm->irq_lock);
                printk(KERN_ERR "kvm: IRQ source ID out of range!\n");
                return;
        }
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