x86: fix IO APIC resource allocation error message

Impact: fix incorrect error message

- IO APIC resource allocation error message contains one too many "be".

- Print the error message iff there are IO APICs in the system.

I've seen this error message for some time on my x86-32 laptop...
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Alan Bartlett <ajb.stxsl@googlemail.com>
LKML-Reference: <200903202100.30789.bzolnier@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/apic/io_apic.c

@@ -4130,10 +4130,13 @@ static int __init ioapic_insert_resources(void)
 	struct resource *r = ioapic_resources;
 
 	if (!r) {
+		if (nr_ioapics > 0) {
 			printk(KERN_ERR
-		       "IO APIC resources could be not be allocated.\n");
+				"IO APIC resources couldn't be allocated.\n");
 			return -1;
 		}
+		return 0;
+	}
 
 	for (i = 0; i < nr_ioapics; i++) {
 		insert_resource(&iomem_resource, r);