ice: Slightly simply ice_find_free_recp_res_idx

The 'possible_idx' bitmap is set just after it is zeroed, so we can save
the first step.

The 'free_idx' bitmap is used only at the end of the function as the
result of a bitmap xor operation. So there is no need to explicitly
zero it before.

So, slightly simply the code and remove 2 useless 'bitmap_zero()' call
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice_switch.c

@@ -4070,10 +4070,8 @@ ice_find_free_recp_res_idx(struct ice_hw *hw, const unsigned long *profiles,
 	DECLARE_BITMAP(used_idx, ICE_MAX_FV_WORDS);
 	u16 bit;
 
-	bitmap_zero(possible_idx, ICE_MAX_FV_WORDS);
 	bitmap_zero(recipes, ICE_MAX_NUM_RECIPES);
 	bitmap_zero(used_idx, ICE_MAX_FV_WORDS);
-	bitmap_zero(free_idx, ICE_MAX_FV_WORDS);
 
 	bitmap_set(possible_idx, 0, ICE_MAX_FV_WORDS);