clk: sunxi-ng: nkm: remove redundant initialization of tmp_parent

clk: sunxi-ng: nkm: remove redundant initialization of tmp_parent

Variable tmp_parent is being ininitialized with a value that is never
read, the initialization is redundant and can be removed. Move the
initialization and move the variable to the inner loop scope.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20231023133502.666559-1-colin.i.king@gmail.com
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>