fm10k: reduce the scope of local err variable

Reduce the scope of the local err variable in the fm10k_iov_alloc_data
function.

This was detected by cppcheck and resolves the following style warning
produced by that tool:

[fm10k_iov.c:426]: (style) The scope of the variable 'err' can be reduced.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/fm10k/fm10k_iov.c

 // SPDX-License-Identifier: GPL-2.0
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
 
 #include "fm10k.h"
 #include "fm10k_vf.h"
@@ -426,7 +426,7 @@ static s32 fm10k_iov_alloc_data(struct pci_dev *pdev, int num_vfs)
 	struct fm10k_iov_data *iov_data = interface->iov_data;
 	struct fm10k_hw *hw = &interface->hw;
 	size_t size;
-	int i, err;
+	int i;
 
 	/* return error if iov_data is already populated */
 	if (iov_data)
@@ -452,6 +452,7 @@ static s32 fm10k_iov_alloc_data(struct pci_dev *pdev, int num_vfs)
 	/* loop through vf_info structures initializing each entry */
 	for (i = 0; i < num_vfs; i++) {
 		struct fm10k_vf_info *vf_info = &iov_data->vf_info[i];
+		int err;
 
 		/* Record VF VSI value */
 		vf_info->vsi = i + 1;