If the House of Representatives is controlled by the Democrats and a simple majority vote of the membership votes to impeach President Trump, the case would then go before the Senate. After the evidence is heard, it would take a two-thirds vote of the Senators to remove him from office.
If there are 46 senators who are Democrats and they all voted to impeach the President, it would require 21 of the 54 Republicans to vote for his impeachment in order to remove him from office
In my opinion, it is very likely that the House of Representatives will, in fact, seek to discredit Donald Trump by initiating the impeachment process. Even it Trump is exonerated, the impeachment will be a stain on his Presidency.