ixgbe: add braces around else block

This commit fixes a checkpatch.pl warning for style, by adding braces
around the else block, since the if block requires braces.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_common.c

@@ -3194,9 +3194,9 @@ s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
 				 * Ignore it. */
 				vfta_changed = false;
 			}
-		}
-		else
+		} else {
 			IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
+		}
 	}
 
 	if (vfta_changed)