dwc3_gadget_init_hw_endpoints calls dwc3_alloc_trb_pool only if epnum is not
equal to 0 or 1. Hence, rechecking it in the called function is redundant.
Signed-off-by: NAmit Virdi <amit.virdi@st.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>