fm10k: return proper error code when pci_enable_msix_range fails

The pci_enable_msix_range() function returns a positive value of the
number of allocated vectors if it succeeds. On failure it returns
a negative error code. Return this code properly so that the error
message printed by the driver will show the actual error code instead of
being masked by -ENOMEM.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/fm10k/fm10k_main.c

@@ -1858,7 +1858,7 @@ static int fm10k_init_msix_capability(struct fm10k_intfc *interface)
 	if (v_budget < 0) {
 		kfree(interface->msix_entries);
 		interface->msix_entries = NULL;
-		return -ENOMEM;
+		return v_budget;
 	}
 
 	/* record the number of queues available for q_vectors */