staging: rtl8723bs: simplify boolean return in IsFrameTypeCtrl()

staging: rtl8723bs: simplify boolean return in IsFrameTypeCtrl()

Replace the simple if-else statement which checked value of
GetFrameType(pframe), if equal to WIFI_CTRL_TYPE, function
IsFrameTypeCtrl() returned true else false, with a single return
statement returning true only if GetFrameType(pframe) == WIFI_CTRL_TYPE
otherwise returns false.

Signed-off-by: Prithvi Tambewagh <activprithvi@gmail.com>
Reviewed-by: Luka Gejak <luka.gejak@linux.dev>
Link: https://patch.msgid.link/20260409135026.137904-4-activprithvi@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>